Caterpillarengine - marinemarine engine
Caterpillar D364
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar D364 is a naturally aspirated V8 diesel engine, not a mobile machine - it has no undercarriage, track, or wheel chassis, and no operating weight in the excavator/dozer sense. Introduced in 1949, it displaces 27.2 L (1,662 cu in) from a 5.75 x 8 in (146 x 203 mm) bore and stroke, rated up to 265 hp maximum and 215 hp continuous at 1,200 rpm. It belongs to a modular big-block engine line Caterpillar launched the same year alongside the supercharged D375 (same basic block, higher output), the V12 D386, and the supercharged V12 D397. Documented configurations center on shipboard auxiliary generator sets and stationary generator packages, commonly paired with a 450-volt, 150 kW continuous (up to 234 kW for two hours) generator head. No documented successor model carries the D364 name forward.
Across the family, the differentiator was displacement and forced induction rather than a generational redesign of the D364 itself: the D375 added a supercharger to the same V8 architecture, while the D386 and D397 stepped up to V12 configurations for higher continuous output. The D364 also shares parts commonality with the smaller D339 and D342 engines per factory parts-catalog cross-references, which matters directly for sourcing today. In the used and parts market, the D364 survives mainly as a well-documented piece of Great Lakes marine history - the SS Col. James M. Schoonmaker's preserved genset is a known example - and as a source of interchangeable components for D339/D342/D375 owners rather than as a commonly traded complete unit. Parts availability leans on reman exchange and cross-family interchange more than new-old-stock, and serial-prefix records for the model are thin enough that only one prefix range is independently corroborated.
Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.
Caterpillar D364 specifications
Engine
| Model | Caterpillar D364, naturally aspirated V8 diesel (introduced 1949) |
| Configuration | 8-cylinder, V8, four-stroke, naturally aspirated |
| Displacement | 27.2 L (1,662 cu in) |
| Bore x Stroke | 146 mm x 203 mm (5.75 in x 8 in) |
| Gross power (maximum rating) | 198 kW (265 hp) at 1,200 rpm |
| Continuous power rating | 160 kW (215 hp) at 1,200 rpm |
| Emissions tier | Not applicable — predates modern emissions certification standards |
| Serial number prefixes | 19B1-up, 20B1-up, 21B1-up (per factory service manual grouping D364 with sibling D375/D386/D397 engines) |
Weights
| Operating/dry weight | Not published in available literature for this engine — verify against the engine data plate or a Cat dealer |
Dimensions
| Overall dimensions | Not published in available literature for this engine — verify against the engine data plate or a Cat dealer |
Performance
| Governed speed | 1,200 rpm (full-load rated speed) |
| Peak torque | 1,410 Nm (1,040 lb-ft), peak at 700 rpm, near-flat across 550-800 rpm |
| Generator set output (continuous) | 150 kW continuous at 450V, as fitted in a documented Great Lakes vessel installation |
| Generator set output (short-term peak) | 234 kW for up to 2 hours, heat-limited |
Service capacities (summary)
| Fuel, hydraulic, engine oil, cooling system capacities | Not published in available literature for this engine — verify with a Cat dealer or the applicable factory service manual |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
D364 fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with oil filter) | Not documented in publicly available literature for this exact engine/serial range — verify against the D364 operation & maintenance manual or dealer parts book before servicing. | Not confirmed by name for this specific engine. This is a 1949-era naturally aspirated V8 marine/auxiliary-power diesel that predates Caterpillar's modern branded oil line (Cat DEO); period lubrication charts for this generation call for a straight-viscosity diesel engine oil graded to ambient temperature at the installation (heavier grade in warm climates, lighter grade in cold conditions). Confirm exact grade and brand spec against the engine dataplate and OMM. |
| Cooling system (jacket water / raw-water circuit) | Not documented in publicly available literature for this exact engine/serial range — capacity varies with the boatbuilder's cooling loop, heat-exchanger, and keel-cooler configuration; verify against the OMM. | Not confirmed by name for this specific engine. General practice for raw-water-cooled marine diesels of this vintage is a fresh-water jacket circuit dosed with a corrosion inhibitor; confirm the exact coolant/inhibitor spec named in the OMM rather than assuming a modern Cat ELC-era product, since this predates that line. |
| Fuel system | No integral fuel tank is part of the engine package — tank sizing is set by the vessel installation, not the engine OMM. | Clean, water-free diesel fuel meeting the fuel specification current at the time of the engine's OMM printing. No brand-name Cat fuel product applies; use the fuel grade and cleanliness limits stated in the OMM fuel-system section. |
| Grease points (water pump, linkages, and other fittings) | Spec only — no reservoir capacity applies; lubricate per the OMM's grease-point schedule. | General-purpose chassis grease per the OMM's stated NLGI grade; specific brand name not confirmed for this engine in available sources. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar D364 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
Servicing the D364 beyond the schedule
Predictive maintenance & fluid analysis
On a mechanically injected D364 there's no ECM or fault-code log, so oil sampling is the main predictive tool. Pull crankcase samples at each service interval and watch for coolant intrusion, fuel dilution, and rising bearing or liner wear metals, especially on units running long continuous-duty generator cycles. Track jacket-water and raw-water temperature differential across the heat exchanger; a narrowing spread signals scale or fouling building up before output or exhaust temperature shows it.
Corrective & common repairs
Recurring D364 complaints trace to the mechanical fuel system and cooling circuit rather than electronics: sticking unit injectors, worn governor linkage causing speed hunting, and raw-water pump impeller failure are the common repair calls on these marine and genset installations. Injection timing drift shows up as rough running or exhaust smoke before output drops noticeably. Because the engine is naturally aspirated, low-power complaints usually point to fuel delivery, valve lash, or a fouled heat exchanger rather than any boost-related cause.
Overhaul & rebuild points
Rebuild work on this V8 centers on cylinder liners, pistons, and main/rod bearings, components it shares in design lineage with the smaller D339 and D342 engines. At major overhaul, check liner bore wear and ring end gap, inspect liner seals for coolant leaking into the crankcase, and recondition the mechanical governor and injection pump as a matched set rather than piecemeal. Verify camshaft and valve train wear against factory clearances; sourcing parts for a 1949-era block increasingly relies on reman exchange.
Seasonal & environment servicing
For raw-water or heat-exchanger cooled D364 installations laid up seasonally, drain and flush the raw-water side to prevent scale and salt buildup, then fog the cylinders and seal intake and exhaust openings against humidity before winter lay-up. Check the raw-water pump impeller and sacrificial zinc anodes before relaunch, since a season of inactivity is the leading cause of impeller cracking and anode depletion. Stationary gensets in humid engine-room or dockside environments need more frequent breather and electrical-connection checks to control corrosion.
D364 common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 1H-1444 | Transfer--Oil Filter Instructions--1 7/8" High | Lubrication service | Check fitment → |
| 1H-2680 | Transfer--Oil Filter Instructions--1 7/8" High | Lubrication service | Check fitment → |
| 1H-5777 | Filter Assem. | Scheduled service item | Check fitment → |
| 2H-5288 | Filter Assembly | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
D364 fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| Low oil pressure (panel gauge/alarm) | Oil pressure gauge on the engine or generator control panel reads below the normal operating band; some panels trip a buzzer or fuel shutoff solenoid at a set low value | Low oil level, worn oil pump, clogged suction screen, worn main or rod bearings, or a faulty pressure sender/gauge line | Stop the engine, check oil level and the sender/gauge line, confirm actual pressure with a mechanical test gauge before restarting |
| High coolant (jacket water) temperature (panel gauge/alarm) | Coolant temperature gauge reads above the safe running range; on marine/generator panels this can trigger an alarm or automatic shutdown | Restricted raw-water flow, fouled heat exchanger or keel cooler, slipping water pump drive, low coolant level, or a stuck thermostat | Reduce load, check raw-water strainer, heat exchanger and pump drive, verify coolant level before returning to service |
| Low fuel pressure (panel gauge) | Fuel pressure gauge shows supply pressure to the injection pump dropping below normal | Clogged fuel filter or strainer, air drawn into the suction side, or a worn fuel transfer pump | Inspect and change fuel filters, check lines and fittings for air leaks, bleed the fuel system before restart |
| Overspeed trip (mechanical governor/shutdown lever) | Flyweight-type mechanical overspeed device trips the fuel rack or shutoff lever when engine speed exceeds the governor's set limit | Sudden loss of load, governor linkage failure or misadjustment, or a sticking fuel rack | Inspect governor linkage and fuel rack for binding, reset the trip lever per the shop manual procedure, verify governor setting before restart |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
D364 attachments & work tools
Generator-set pairing
Documented factory use of this engine is as a ship's auxiliary generator engine, not propulsion. Continuous rating pairs with a 450V marine-rated generator head near 150 kW, with a short-term overload capacity near 234 kW for about 2 hours before heat becomes the limiting factor.
Cooling system arrangement
At least one period installation used a radiator-type (heat-exchanger) cooling arrangement rather than raw-water or keel cooling, and that setup showed overheating issues in high ambient conditions on record. No factory keel-cooling package is documented for this specific model.
Aspiration/output variant
This engine is the naturally aspirated base of a modular V8 family. A supercharged sibling shares the same 5.75 x 8 in (146 x 203 mm) bore and stroke and adds roughly 100 hp using a Roots-type blower mounted at the rear of the engine, rather than being an option ordered onto this base engine.
Air filtration configuration
The naturally aspirated version runs a single oil-bath air cleaner. The supercharged sibling in the same family needs dual oil-bath air cleaners to handle the added blower airflow - a configuration difference across the family rather than a selectable option on this model.
Larger-displacement family options
The same bore/stroke platform was extended to V12 form for higher-output marine and generator duty, in both naturally aspirated and supercharged form. This gives a path to more power within one modular design family rather than a different architecture, though these are separate model designations, not accessories for this engine.
Propulsion, PTO, and coupling provisions
No marine reverse/reduction gear, PTO, or clutch-coupling arrangement is documented specifically for this engine. Available records point to auxiliary generator-set duty only. Propulsion-specific gearbox pairings are not confirmed for this model; verify with a Caterpillar marine dealer or original equipment records if propulsion use is intended.
All D364 assemblies by section
Every catalogued assembly group for the Caterpillar D364. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Attachments
7f2872 Accessory Drive Group
| 7F***72 | Accessory Drive Group | 1 |
Air Cleaner--Type 1
Air Cleaner--Type 2
1h2971 Air Cleaner Arrangement
| 1H***71 | Air Cleaner Arrangement | 1 |
| 3B***04 | Clip--Vent Trap To Injection Pump Tube | 1 |
| 3B***88 | Adapter,Straight,Pi Oil Level Gage Tube | 1 |
3h5982 Air Cleaner Arrangement
| 1H***17 | Breather Tube Assembly | 1 |
| 3B***04 | Clip--Vent Trap To Injection Pump Tube | 1 |
| 3B***88 | Adapter,Straight,Pi Oil Level Gage Tube | 1 |
9f716 Air Compressor--Part 1 Of 2
| 9F***16 | Air Compressor | 1 |
5f2703 Air Compressor
| 5F***03 | Air Compressor | 1 |
9f716 Air Compressor--Part 2 Of 2
| 9F***16 | Air Compressor | 1 |
6f5886 Air Compressor Arrangement
| 5F***03 | Air Compressor | 1 |
| 6B***62 | Governor | 1 |
| 6F***85 | Air Compressor Mounting Group | 1 |
9f722 Air Compressor Group--Engine Mounted
| 9F***22 | Air Compressor Group | 1 |
6f5885 Air Compressor Mounting Group
| 6F***85 | Air Compressor Mounting Group | 1 |
6f7691 Receiver Group
| 6F***91 | Air Receiver Group | 1 |
3h756 Ammeter Group
| 3H***56 | Ammeter Group | 1 |
7f9387 Auxiliary Drive And Bilge Pump Arrangement
| 1H***48 | Auxiliary Drive Group | 1 |
| 1L***87 | Auxiliary Drive Group | 1 |
| 7F***87 | Auxiliary Drive And Bilge Pump Arrangement | 1 |
3h8856 Auxiliary Drive And Bilge Pump Arrangement
| 2H***32 | Auxiliary Drive Group | 1 |
| 3H***56 | Auxiliary Drive And Bilge Pump Arrangement | 1 |
| 8F***78 | Vee Belt | 1 |
1h6548 Auxiliary Drive Group
| 1H***48 | Auxiliary Drive Group | 1 |
1l1287 Auxiliary Drive Group
| 1L***87 | Auxiliary Drive Group | 1 |
7f8292 Auxiliary Drive Group
| 7F***92 | Auxiliary Drive Group | 1 |
2h7032 Auxiliary Drive Group
| 2H***32 | Auxiliary Drive Group | 1 |
8f890 Base Arrangement--Floor Mounted
| 6F***80 | Sump Pump Group | 1 |
| 6F***03 | Bell --Suction | 1 |
| 6F***48 | Base Group | 1 |
6f9248 Base Group--Floor Mounted
| 6F***48 | Base Group | 1 |
5f5276 Starting Battery Group
| 5F***76 | Battery Group | 1 |
8f7954 Clutch
| 8F***54 | Clutch | 1 |
7f2623 Clutch
| 7F***23 | Clutch | 1 |
6f9963 Clutch
| 6F***63 | Clutch | 1 |
6f9964 Clutch
| 6F***64 | Clutch | 1 |
9f9448 Clutch Assembly
| 9F***48 | Clutch Assembly | 1 |
9f3909 Complete Governor Group--1100 R.P.M.
| 9F***09 | Complete Governor Group | 1 |
9f3908 Complete Governor Group--1000 R.P.M.-- Type 2
| 9F***08 | Complete Governor Group | 1 |
9f3908 Complete Governor Group--1000 R.P.M. --Type 1
| 9F***08 | Complete Governor Group | 1 |
1h7597 Control And Panel Arrangement.--L.H.
| 1H***31 | Fuel Priming Pump Group | 1 |
| 1H***97 | Control And Panel Arrangement | 1 |
| 1L***00 | Fuel Priming Pump Group | 1 |
9f8188 Control And Panel Arrangement--L.H.
| 7F***45 | Fuel Priming Pump Group | 1 |
| 9F***64 | Ether Starting Aid Group | 1 |
| 9F***18 | Instrument Panel Group | 1 |
2h4914 Control Group--Double Cable (L.H.)
| 2H***14 | Control Group | 1 |
2h4913 Control Group--Double Cable (R.H.)
| 2H***13 | Control Group | 1 |
7f3960 Cylinder Head Assembly
| 7F***60 | Cylinder Head Assembly | 1 |
9f740 Discharger
| 9F***40 | Discharger Group | 1 |
1h1577 Electric Starting System Arrangement
| 1H***77 | Electric Starting System Arrangement | 1 |
| 6F***85 | Motor And Wiring Group Group | 1 |
| 6F***32 | Junction Box Group | 1 |
1h1578 Electric Starting System Arrangement
| 1H***78 | Electric Starting System Arrangement | 1 |
| 6F***89 | Motor And Wiring Group Group | 1 |
| 6F***32 | Junction Box Group | 1 |
9f3664 Ether Starting Aid Group--Type 1
| 9F***64 | Ether Starting Aid Group | 1 |
9f3664 Ether Starting Aid Group--Type 2
| 9F***64 | Ether Starting Aid Group | 1 |
7f9498 Exhaust Extension Group
| 7F***98 | Exhaust Extension Group | 1 |
7f2121 Exhaust Manifold Group--Dry Type
| 7F***21 | Exhaust Manifold Group | 1 |
8f4154 Expansion Tank-Group--Large Capacity
| 8F***54 | Expansion Tank-Group | 1 |
7f2628 Front Power Take-Off Group
| 7F***28 | Front Power Take-Off Group | 1 |
7f2626 Front Power Take-Off Group
| 7F***26 | Front Power Take-Off Group | 1 |
7f2624 Front Power Take-Off Group
| 7F***24 | Front Power Take-Off Group | 1 |
8f7956 Front Power Take-Off Group
| 8F***56 | Front Power Take-Off Group | 1 |
7f8745 Fuel Priming Pump Group--L.H. (Type 1)
| 7F***45 | Fuel Priming Pump Group | 1 |
1l900 Fuel Priming Pump Group--L.H. Type 1
| 1L***00 | Fuel Priming Pump Group | 1 |
7f8745 Fuel Priming Pump Group--L.H. Type 2
| 7F***45 | Fuel Priming Pump Group | 1 |
1l900 Fuel Priming Pump Group--L.H. --Type 2
| 1L***00 | Fuel Priming Pump Group | 1 |
1h6731 Fuel Priming Pump Group--L.H.
| 1H***31 | Fuel Priming Pump Group | 1 |
9f3250 Gasoline Starting Engine Group--R.H.
| 0S***09 | Bolt (3/4") Filler Tube Assembly To Transfer Drive Case | 8 |
| 0S***85 | Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine | 2 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 2 |
9f261 Gasoline Starting Engine Group--R.H.
| 0S***09 | Bolt (3/4") Filler Tube Assembly To Transfer Drive Case | 8 |
| 0S***85 | Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine | 2 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 2 |
9f262 Gasoline Starting Engine Group--L.H.
| 0S***09 | Bolt (3/4") Filler Tube Assembly To Transfer Drive Case | 8 |
| 0S***85 | Bolt; 12.7 mm (1/2") Diameter X 38.1 mm (1 1/2") Length Generator To Engine | 2 |
| 0S***94 | Bolt (1 In. Long 3/8 In. Dia.); Plate Assembly To Support Assembly | 2 |
6f5419 Generator
| 6F***19 | Generator | 1 |
8f4595 Generator
| 8F***95 | Generator | 1 |
1l5125 Generator--32 Volt, 50 Ampere
| 1L***25 | Generator | 1 |
6f6696 Generator
| 6F***96 | Generator | 1 |
6f9226 Generator Group--32 Volt, 15 Ampere --Type 1
6f5546 Generator Group--32 Volt, 50 Ampere --Type 2
| 6F***46 | Generator Group | 1 |
6f5734 Generator Group--6 Volt, 30 Ampere --Type 1
| 6F***34 | Generator Group | 1 |
6f5734 Generator Group--6 Volt, 30 Ampere --Type 2
| 6F***34 | Generator Group | 1 |
6f9226 Generator Group--32 Volt, 15 Ampere --Type 2
| 6F***26 | Generator Group | 1 |
6f5546 Generator Group--32 Volt, 50 Ampere-- Type 1
| 6F***46 | Generator Group | 1 |
2h7432 Glow Plug Arrangement
| 2H***32 | Glow Plug Arrangement | 1 |
| 2H***33 | Transformer | 1 |
| 2H***37 | Glow Plug Group | 1 |
2h7437 Glow Plug Group--24 Volt
| 2H***37 | Glow Plug Group | 1 |
9f3442 Glow Plug Group--Type 2
| 9F***42 | Glow Plug Group | 1 |
9f3442 Glow Plug Group--Type 1
| 9F***42 | Glow Plug Group | 1 |
9f3442 Glow Plug Group--Type 3
| 9F***42 | Glow Plug Group | 1 |
6b9762 Governor
| 6B***62 | Governor | 1 |
8f8525 Governor Actuator Group--Pneumatic Type 1
| 8F***25 | Governor Actuator Group | 1 |
8f8525 Governor Actuator Group--Pneumatic--Type 3
| 8F***25 | Governor Actuator Group | 1 |
8f8525 Pneumatic Governor Actuator Group--Type 2
| 8F***25 | Governor Actuator Group | 1 |
6f9102 Heat Exchanger
| 6F***02 | Heat Exchanger | 1 |
9f5218 Instrument Panel Group--L.H.
| 9F***18 | Instrument Panel Group | 1 |
1h1891 Instrument Panel Group
| 1H***91 | Instrument Panel Group | 1 |
9f5216 Instrument Panel Group--L.H.
| 9F***16 | Instrument Panel Group | 1 |
9f5215 Instrument Panel Group--R.H.
| 9F***15 | Instrument Panel Group | 1 |
6f9032 Junction Box Group
| 6F***32 | Junction Box Group | 1 |
3h3171 Motor--Counterclockwise Engine Rotation
5f7739 Magnetic Switch
| 5F***39 | Magnetic Switch | 1 |
6f5987 Motor--Clockwise Engine Rotation
6f4462 Motor--Counterclockwise Engine Rotation
6f4463 Motor--Clockwise Engine Rotation
1l4506 Motor--Counterclockwise Engine Rotation
6f5988 Motor--Counterclockwise Engine Rotation
6f285 Motor And Wiring Group--Counterclockwise Engine Rotation (Rear View)
| 6F***89 | Motor And Wiring Group Group | 1 |
6f285 Motor And Wiring Group--Counterclockwise Engine Rotation (Side View)
| 6F***89 | Motor And Wiring Group Group | 1 |
6f8943 Motor Assembly--Counterclockwise Engine Rotation
| 6F***43 | Motor Assembly | 1 |
3h3247 Motor Assembly--Counterclockwise Engine Rotation
| 3H***46 | Motor Assembly | 1 |
3h3170 Motor--Clockwise Engine Rotation
| 3H***70 | Motor Group-Air Starting | 1 |
8f4419 Muffler Group--Wet Type
| 8F***19 | Muffler Group | 1 |
8f4415 Muffler Group
| 8F***15 | Muffler Group | 1 |
8f256 Oiler
8f2184 Pump
6f7322 Pump Assembly
| 6F***22 | Pump Assembly | 1 |
1l506 Pump Assembly--Type 1
| 1L***06 | Pump Assembly | 1 |
1l506 Pump Assembly--Type 2
| 1L***06 | Pump Assembly | 1 |
9f6051 Ratchet Group--Positive Locking --Type 1
| 9F***51 | Ratchet Group | 1 |
8f8607 Ratchet Group
| 8F***07 | Ratchet Group | 1 |
9f6051 Ratchet Group--Positive Locking --Type 2
| 9F***51 | Ratchet Group | 1 |
9f4985 Regulator
| 9F***85 | Regulator | 1 |
6f5420 Regulator--Part 2 Of 2
| 6F***20 | Regulator | 1 |
7f3817 Regulator
| 7F***17 | Regulator | 1 |
3h2273 Regulator
| 3H***73 | Regulator | 1 |
4h8598 Regulator--6 Volt
| 4H***98 | Regulator | 1 |
6f5420 Regulator--Part 1 Of 2
| 6F***20 | Regulator | 1 |
8f5797 Regulator Assembly
| 8F***97 | Regulator Assembly | 1 |
8f5826 Regulator Assembly
| 8F***26 | Regulator Assembly | 1 |
1h2816 Regulator Valve
| 1H***16 | Regulator Valve | 1 |
Relay And Element Assemblies
8f5738 Relay Assembly
| 8F***38 | Relay As | 1 |
8f5756 Relay Assembly
| 8F***56 | Relay Assembly | 1 |
1h7601 Remote Control And Panel Arrangement--L.H.
| 1H***31 | Fuel Priming Pump Group | 1 |
| 1H***01 | Remote Control And Panel Arrangement | 1 |
| 1L***00 | Fuel Priming Pump Group | 1 |
1h3521 Remote Control And Panel Arrangement--L.H.
| 1H***21 | Remote Control And Panel Arrangement | 1 |
| 7F***45 | Fuel Priming Pump Group | 1 |
| 9F***64 | Ether Starting Aid Group | 1 |
9f6408 Remote Control Group--Single Cable
| 9F***08 | Remote Control Group | 1 |
1l4342 Safety Alarm Group
| 1L***42 | Safety Alarm Group | 1 |
1h9337 Safety Alarm Group--L.H.
| 1H***37 | Safety Alarm Group | 1 |
8f4680 Safety Alarm Group--R.H.
| 8F***80 | Safety Alarm Group | 1 |
8f3269 Silencer And Vapor Arrester Group
| 8F***69 | Silencer And Vapor Arrester Group | 1 |
8f1091 Starter Pinion Group--Belt Driven--Counterclockwise Engine Rotation
| 8F***91 | Starter Pinion Group | 1 |
8f6071 Starter Pinion Group--Belt Driven--Clockwise Engine Rotation
| 8F***71 | Starter Pinion Group | 1 |
7f2290 Starting Motor Group--Counterclockwise Engine Rotation--Type 3
| 7F***89 | Starting Motor Group | 1 |
7f2290 Starting Motor Group--Compressed Air--Counterclockwise Engine Rotation--Type 2
| 7F***90 | Starting Motor Group | 1 |
7f2290 Starting Motor Group--Compressed Air--Counterclockwise Engine Rotation--Type 1
| 7F***89 | Starting Motor Group | 1 |
8f4185 Foot Valve And Strainer Assembly
| 8F***85 | Strainer As; Foot Valve And Strainer Assembly | 1 |
1l4469 Stub Shaft Group
| 1L***69 | Stub Shaft Group | 1 |
7f2740 Sump Pump
| 7F***40 | Sump Pump | 1 |
6f4480 Sump Pump Group
| 6F***80 | Sump Pump Group | 1 |
3f1006 Switch
| 3F***06 | Switch; (Elec. Horn) | 1 |
1h9275 Tachometer And Cable Group--R.H. --Type 2
| 1H***75 | Tachometer And Cable Group | 1 |
7f7105 Tachometer And Cable Group--Type 1
| 7F***05 | Tachometer And Cable Group | 1 |
1h9276 Tachometer And Cable Group--L.H.-- Type 1
| 1H***76 | Tachometer And Cable Group | 1 |
1h9276 Tachometer And Cable Group--L.H. --Type 2
| 1H***76 | Tachometer And Cable Group | 1 |
7f7105 Tachometer And Cable Group--Type 2
| 7F***05 | Tachometer And Cable Group | 1 |
1l6724 Tachometer And Cable Group--L.H.
| 1L***24 | Tachometer And Cable Group | 1 |
1h9275 Tachometer And Cable Group--R.H. Type 1
| 1H***75 | Tachometer And Cable Group | 1 |
1l6723 Tachometer And Cable Group--R.H.
| 1L***23 | Tachometer And Cable Group | 1 |
2h5782 Fuel Priming Pump Group--L.H.
| 2H***82 | Unknown | 1 |
6f6043 Valve
1l2073 Regulating Valve
| 1L***73 | Valve Group-Pressure Reducing; -Rh | 1 |
3h3225 Balanced Whistle Valve
| 3H***25 | Valve-Whistle | 1 |
Diesel Engine
Air Silencer
Balancer
Basic Governor--Part 1a Of 2
Basic Governor--Part 2 Of 2
Basic Governor--Part 1 Of 2
Breather
Camshaft
9f3907 Complete Governor Group
| 9F***07 | Complete Governor Group | 1 |
Connecting Rod And Piston--8 Groups Req'D
Crankshaft
Cylinder Block And Covers--Part 1 Of 2
Cylinder Block And Covers--Part 2 Of 2
Cylinder Head And Valve Mechanism
9f740 Discharger
| 9F***40 | Discharger Group | 1 |
Engine Base
9f3663 Ether Starting Aid Group
| 9F***63 | Ether Starting Aid Group | 1 |
Fresh Water Lines--Part 1 Of 2
Fresh Water Lines--Part 2 Of 2
Fresh Water Lines
2f5744 Fresh Water Pump Group
| 2F***44 | Fresh Water Pump Group | 1 |
1h7875 Fresh Water Pump Group
| 1H***75 | Fresh Water Pump Group | 1 |
Front Accessory Drive--Part 1 Of 2
Front Accessory Drive--Part 2 Of 2
Fuel Filter
Fuel Injection Valves And Lines
Fuel Priming Pump
Fuel Pump And Governor Drive
3h1477 Fuel Pump Bleed Line Changeover Group
| 3H***77 | Fuel Pump Bleed Line Changeover Group | 1 |
3h8835 Fuel Pump Bleed Line Group--Field Changeover
| 3H***35 | Fuel Pump Bleed Line Group | 1 |
Fuel Pump Housing
2h7670 Fuel Transfer Pump And Oil Pump Assembly--Counterclockwise Engine Rotation
| 2H***70 | Fuel Transfer Pump And Oil Pump Assembly | 1 |
9f5217 Governor Control And Instrument Panel Group--R.H.
| 9F***17 | Governor Control And Instrument Panel Group--R.H. | 1 |
7f6678 Hour Meter And Tachometer Drive Group
| 7F***76 | Hour Meter And Tachometer Drive Group | 1 |
Manifolds
Oil Cooler
8f6650 Oil Filter Group
| 8F***50 | Oil Filter Group | 1 |
8f7469 Oil Filter Group--Reservoir Type
| 8F***69 | Oil Filter Group | 1 |
Oil Lines--Part 2 Of 2
Oil Lines--Part 1 Of 2
6f6133 Oil Pump Group--Counterclockwise Engine Rotation
| 6F***33 | Oil Pump Group | 1 |
7f3465 Oil Pump Group--Clockwise Engine Rotation
| 7F***65 | Oil Pump Group | 1 |
Oil Pump Idler Gear
1h3935 Pump Assembly
| 1H***35 | Pump Assembly | 1 |
6f7322 Pump Assembly
| 6F***22 | Pump Assembly | 1 |
9f6051 Ratchet Group--Positive Locking
| 9F***51 | Ratchet Group | 1 |
Raw Water Lines
6f4481 Raw Water Pump Group
| 6F***81 | Raw Water Pump Group | 1 |
Rear Accessory Drive
Sump Pump
7f2740 Sump Pump
| 7F***40 | Sump Pump | 1 |
1f3286 Tachometer Drive Group--Counterclockwise Engine Rotation
| 1F***86 | Tachometer Drive Group | 1 |
6f9682 Tachometer Drive Group--Clockwise Engine Rotation
| 6F***82 | Tachometer Drive Group | 1 |
Marine Gears
2h5288 Filter Assembly
| 2H***88 | Filter Assembly | 1 |
2h1046 Gear Assembly--Part 1 Of 3
| 2H***46 | Gear Assembly | 1 |
2h1047 Gear Assembly--Part 3 Of 3
| 2H***47 | Gear Assembly | 1 |
2h1047 Gear Assembly--Part 2 Of 3
| 2H***47 | Gear Assembly | 1 |
2h1044 Gear Assembly--Part 1 Of 3
| 2H***44 | Gear Assembly | 1 |
2h1048 Gear Assembly--Part 2 Of 3
| 2H***48 | Gear Assembly | 1 |
2h1048 Gear Assembly--Part 1 Of 3
| 2H***48 | Gear Assembly | 1 |
2h1046 Gear Assembly--Part 3 Of 3
| 2H***46 | Gear Assembly | 1 |
2h1045 Gear Assembly--Part 3 Of 3
| 2H***45 | Gear Assembly | 1 |
2h1048 Gear Assembly--Part 3 Of 3
| 2H***48 | Gear Assembly | 1 |
2h1047 Gear Assembly--Part 1 Of 3
| 2H***47 | Gear Assembly | 1 |
2h1046 Gear Assembly--Part 2 Of 3
| 2H***46 | Gear Assembly | 1 |
2h1043 Gear Assembly--Part 1 Of 3
| 2H***43 | Gear Assembly | 1 |
2h1044 Gear Assembly--Part 3 Of 3
| 2H***44 | Gear Assembly | 1 |
2h1043 Gear Assembly--Part 2 Of 3
| 2H***43 | Gear Assembly | 1 |
2h1044 Gear Assembly--Part 2 Of 3
| 2H***44 | Gear Assembly | 1 |
2h1045 Gear Assembly--Part 1 Of 3
| 2H***45 | Gear Assembly | 1 |
2h1045 Gear Assembly--Part 2 Of 3
| 2H***45 | Gear Assembly | 1 |
2h1043 Gear Assembly--Part 3 Of 3
| 2H***43 | Gear Assembly | 1 |
2h1051 Gear Group--R.H.--2.93 : 1 Ratio --Type 1
| 2H***51 | Gear Group | 1 |
2h1051 Gear Group--R.H.--2.93 : 1 Ratio --Type 2
| 2H***51 | Gear Group | 1 |
2h1050 Gear Group--L.H.--1.95 : 1 Ratio --Type 1
| 2H***50 | Gear Group | 1 |
2h1054 Gear Group--L.H.--3.92 : 1 Ratio --Type 1
| 2H***54 | Gear Group | 1 |
2h1052 Gear Group--L.H.--2.93 : 1 Ratio-- Type 2
| 2H***52 | Gear Group | 1 |
2h1054 Gear Group--L.H.--3.92 : 1 Ratio-- Type 2
| 2H***54 | Gear Group | 1 |
2h1049 Gear Group--R.H.--1.95 : 1 Ratio --Type 2
| 2H***49 | Gear Group | 1 |
2h1053 Gear Group--R.H.--3.92 : 1 Ratio --Type 2
| 2H***53 | Gear Group | 1 |
2h1053 Gear Group--R.H.--3.92 : 1 Ratio Type 1
| 2H***53 | Gear Group | 1 |
2h1049 Gear Group--R.H.--1.95 : 1 Ratio (Type 1)
| 2H***49 | Gear Group | 1 |
2h1052 Gear Group--L.H.--2.93 : 1 Ratio --Type 1
| 2H***52 | Gear Group | 1 |
2h1050 Gear Group--L.H.--1.95 : 1 Ratio --Type 2
| 2H***50 | Gear Group | 1 |
8f9866 Grease Gun--Type 2
| 8F***66 | Grease Gun As | 1 |
8f9866 Grease Gun--Type 1
| 8F***66 | Grease Gun As | 1 |
2h4560 Hydraulic Power Take-Off Assembly
| 2H***60 | Hydraulic Power Take-Off Assembly | 1 |
2h9883 Mounting And Connections Group
| 2H***83 | Mounting And Connections Group | 1 |
2h9884 Mounting And Connections Group
| 2H***84 | Mounting And Connections Group | 1 |
Name Plates And Transfers
| 1F***58 | Plate-- Engine Information | 1 |
| 1H***63 | Plate Serial Number | 1 |
| 1H***44 | Transfer--Oil Filter Instructions--1 7/8" High | 1 |
2h5225 Oil Cooler Assembly
| 2H***25 | Oil Cooler Assembly | 1 |
7f2513 Reduction Gear Assembly--R.H.--3 : 1 Ratio
| 7F***13 | Reduction Gear Assembly | 1 |
7f7531 Reduction Gear Assembly--3.9 : 1 Ratio
| 7F***31 | Reduction Gear Assembly | 1 |
7f2511 Reduction Gear Assembly--R.H.--2 : 1 Ratio
| 7F***11 | Reduction Gear Assembly | 1 |
1l3140 Reverse Engine Rotation Arrangement
| 1L***40 | Reverse Engine Rotation Arrangement | 1 |
| 2H***48 | Camshaft Assembly | 1 |
| 2H***71 | Fuel Transfer Pump And Oil Pump Assembly | 1 |
8f4377 Reverse Gear Assembly--Part 2 Of 2
| 8F***77 | Reverse Gear Assembly | 1 |
8f4377 Reverse Gear Assembly--Part 1 Of 2
| 8F***77 | Reverse Gear Assembly | 1 |
9f8334 Reverse Gear Control Group--L.H.
| 9F***34 | Reverse Gear Control Group | 1 |
9f8333 Reverse Gear Control Group--R.H.
| 9F***33 | Reverse Gear Control Group | 1 |
8f2794 Reverse Gear Remote Control Group--L.H.
| 8F***94 | Reverse Gear Remote Control Group | 1 |
8f267 Reverse Gear Remote Control Group
| 8F***67 | Reverse Gear Remote Control Group | 1 |
6f7861 Tool Group
| 6F***61 | Tool Group | 1 |
1h2903 Valve
8f268 Valve
2h5287 Valve Assembly
| 2H***87 | Valve Assembly | 1 |
3h8599 Valve Assembly
| 3H***99 | Valve Assembly | 1 |
D364 serial number reference
On this vintage industrial/marine engine the serial (PIN) tag is a metal plate riveted to the engine block or flywheel housing, usually near the fuel pump side or rear housing. The number reads as a 3-character prefix followed by a sequential unit number (for example 20B00001); the prefix ties the unit to its model and production block, the digits after it are the individual unit count within that block.
| Prefix | Identifies | Notes |
|---|---|---|
| 19B | D364 marine diesel engine, naturally aspirated V8 | Early production serial block for the D364 per the Cat engine service-manual serial-number listing, which groups D364 with sibling engines D375, D386 and D397 and assigns each its own three-prefix block in sequence. Confirm exact range with dealer. |
| 20B | D364 marine diesel engine, naturally aspirated V8, base configuration | Prefix for the D364 marine engine, tied to it by both the factory engine service manual and the standard Cat serial-number-prefix reference. No distinct prefix found for a supercharged or generator-set variant. |
| 21B | D364 marine diesel engine, naturally aspirated V8 | Later production serial block for the D364 per the Cat engine service-manual serial-number listing, following the 19B and 20B blocks in the same model group. Confirm exact range with dealer. |
Frequently asked questions
What engine powers the Caterpillar D364?
The D364 is itself the engine, not a machine it's installed in. It's a naturally aspirated V8 diesel of 27.2 L (1,662 cu in) displacement with a 5.75 x 8 in (146 x 203 mm) bore and stroke, rated up to 265 hp maximum and 215 hp continuous at 1,200 rpm. It's part of a 1949 Caterpillar big-block family alongside the D375, D386, and D397.
What is the D364's operating weight?
The D364 is a stationary and marine power unit, not mobile equipment, so it has no operating weight figure in the sense used for excavators or dozers. A specific dry engine weight is not documented in public sources; confirm the figure for your unit against its serial number and generator package with a Cat dealer or the OEM nameplate.
What replaced the Caterpillar D364?
No documented successor model is confirmed. The D364 was part of Caterpillar's 1949 big-block marine and generator engine line alongside the D375, D386, and D397, and Caterpillar's model numbering for large marine and genset engines moved on in later decades, but a direct one-for-one replacement for the D364 isn't established in available documentation.
What D364 owners discuss
Is there much owner or mechanic discussion out there specific to the D364, or is most of what circulates really about a related engine?
Honestly, dedicated discussion of the D364 by name is thin. It shows up mostly as a footnote in the broader D17000-derived Cat V8/V12 marine and generator family (D364, D375, D386, D397), and the one well-documented running example most people cite is a shipboard 150 kW (200 hp-class) generator set installed aboard a Great Lakes ore carrier during a 1952 refit. Treat any claim that isn't tied to that documented lineage, or to the shared parts catalog across the D364/D375/D386/D397 group, with caution.
What's the fuel system like on a D364, and does it share parts with anything easier to find?
This is a pre-electronic, mechanically governed diesel with jerk-type injection pumps feeding individual cylinders, consistent with Caterpillar's design practice for this V8/V12 family of the late 1940s-1950s. Parts catalogs list the D364 alongside its D339, D342, D375, D386 and D397 relatives for shared items like cylinder liners/piston kits and exhaust valves, so a rebuild shop sourcing for a D364 should also check listings under those other model numbers. Because it's a closed mechanical high-pressure system, have a qualified diesel shop verify injection line integrity and pump timing before running it hard — cracked high-pressure lines on engines this age are a real injury risk.
What's the cooling system behavior people report, and is overheating a known issue?
The design intent was raw-water cooling (drawing directly from the sea or lake), which suits its marine/generator role. At least one documented installation that was converted to or fitted with a radiator setup reported overheating problems, particularly when ambient heat in the engine room climbed (one account cites conditions well above 50 degrees C / 122 degrees F with the ship's boilers lit). If you're looking at a D364 that's been adapted to closed-loop or radiator cooling rather than its native raw-water setup, have the cooling circuit checked by someone experienced with vintage marine diesels before trusting it under sustained load.
I've seen a D364 advertised with a blower/supercharger on it — is that normal, or is it actually a different engine?
Worth double-checking before you buy. The D364 as built was naturally aspirated, rated around 265 hp (198 kW) max and 215 hp (160 kW) continuous at 1200 rpm. The supercharged version of the same basic block is the D375, rated notably higher. Sellers and even casual forum posters have mixed the two up when an engine shows up with a blower attached — if what you're looking at has forced induction, ask the seller to confirm the model tag, because it's more likely a D375 wearing a D364-family family resemblance than an actual D364.
How long do these engines typically last, and are there known bearing or liner wear patterns for this era of Cat V8?
Data specific to the D364 is limited, but the one well-documented shipboard unit logged roughly 13,000+ hours on its mechanical hour meter over its service life before the vessel was retired, which is a strong showing for a low-speed (1200 rpm) auxiliary engine and suggests the design ages well when it stays on raw-water cooling and gets normal upkeep. Broader experience with Cat diesels of this vintage points to wrist-pin and connecting-rod bearing wear as the failure mode to watch for as hours accumulate, but that's general knowledge about engines of the era rather than a documented D364-specific complaint, so don't treat it as gospel for your particular unit — pull a valve cover and check bearing clearance yourself.
Does the D364 have any electronic controls, sensors, or fault codes to worry about?
No. This is a fully mechanical engine with a mechanical governor and jerk-pump injection — no ECM, no sensors, no fault codes of any kind. Any running or performance complaint has to be chased mechanically: compression, injection timing, governor linkage adjustment, and fuel delivery, not a diagnostic scan tool. If a seller or listing mentions fault codes or electronic diagnostics on a D364, that's a red flag that the engine has been misidentified.
What should I actually check before buying a used D364?
Start by confirming identity: verify the data tag matches D364 and isn't actually a supercharged D375 or another sibling in the family, since the block and general layout look similar. Ask for any hour-meter reading and service/rebuild history, understanding that on an engine this old the meter itself may be unreliable or may have been reset at some point — treat a very low number with skepticism. Pull a compression check on all cylinders and, if the seller has run it recently, get an oil sample analyzed for metal content, which will tell you more about bearing and liner condition than hours alone. Look closely at the cooling setup (native raw-water versus a later radiator conversion) since overheating history is a known risk point, and check whether major wear parts (liners, pistons, valves) have already been sourced or replaced, since they cross-reference with the D339/D342/D375/D386/D397 family and aren't hard to find under those numbers. Given the engine's age and the injury risk from a high-pressure mechanical fuel system, have a qualified diesel shop verify injection pump and governor condition before you commit to running it.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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