Komatsu SA6D170E-2C-WD(S/N 21546-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu SA6D170E-2C-WD engine powers mid-to-large class construction equipment, including the WA600-3 wheel loader, WD600-3 wheel loader, and D375A-5 bulldozer. This inline-six, turbocharged, water-cooled diesel unit operates within a machine weight range of approximately 42,900 kg to 97,100 kg depending on the host chassis and configuration. Production for this specific engine serial range (21546-UP) aligns with the 170 Series generation, succeeding earlier 6D170-1 variants and preceding the 170-3 series updates. Configurations vary by application, supporting heavy-duty earthmoving, quarry aggregate handling, and industrial generator sets.
Across the 170 Series generations, the primary changes involve emissions compliance upgrades and integration with Komatsu’s electronic control systems. The SA6D170E-2C-WD represents a specific build configuration within the second generation of the 170 Series, distinguished by its serial prefix and specific aftertreatment or calibration packages for regional markets. In the used and parts market, this engine matters because it serves as the heart of high-hour, high-value machines like the WA600 and D375 series. Its robust cast-iron block and proven turbocharging architecture make it a staple for rebuilds, while the specific serial range (21546-UP) ensures accurate parts matching for critical components like pistons, crankshafts, and fuel systems, preventing costly mismatches in the aftermarket.
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.
Komatsu SA6D170E-2C-WD(S/N 21546-UP) specifications
Engine
| Model | SA6D170E-2C-WD (Build 15B) |
| Gross Power | 455 kW @ 1800 rpm (610 hp @ 1800 rpm) |
| Net Power | 394 kW @ 1800 rpm (528 hp @ 1800 rpm) |
| Displacement | 23.1 L (1413 in³) |
| Cylinders | 6 |
| Emissions Tier | Tier 2 (per SAA6D170E-2 designation) |
Weights
| Operating Weight | 42,900–45,700 kg (94,580–100,750 lb) |
| Shipping Weight | Not documented for this exact serial range — verify with your dealer |
| Ground Pressure | Not documented for this exact serial range — verify with your dealer |
Dimensions
| Transport Length | Not documented for this exact serial range — verify with your dealer |
| Transport Width | Not documented for this exact serial range — verify with your dealer |
| Transport Height | Not documented for this exact serial range — verify with your dealer |
| Track Gauge | Not documented for this exact serial range — verify with your dealer |
| Ground Clearance | Not documented for this exact serial range — verify with your dealer |
Performance
| Travel Speed | Not documented for this exact serial range — verify with your dealer |
| Gradeability | Not documented for this exact serial range — verify with your dealer |
| Dig Depth | Not documented for this exact serial range — verify with your dealer |
| Bucket Capacity | 8.0–22.5 m³ (10.5–29.4 cu.yd) |
Service capacities (summary)
| Fuel Tank | Not documented for this exact serial range — verify with your dealer |
| Hydraulic System | Not documented for this exact serial range — verify with your dealer |
| Engine Oil | Not documented for this exact serial range — verify with your dealer |
| Cooling System | Not documented for this exact serial range — verify with your dealer |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Komatsu SA6D170E-2C-WD(S/N 21546-UP) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the SA6D170E-2C-WD(S/N 21546-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize Komatsu Oil Wear Analysis (KOWA) at every 500-hour interval to monitor engine oil wear metals (iron, copper, lead, aluminum) and contaminants like silicon (dirt) or sodium (coolant). Track hydraulic fluid particle count and viscosity to detect pump or valve wear early. Monitor coolant pH, SCA concentration, and glycol content to prevent liner cavitation and corrosion. KOMTRAX telematics integration allows remote tracking of load frequency and fault codes, enabling proactive scheduling before critical failures occur in the SA6D170E-2C-WD powertrain.
Corrective & Common Repairs
Address common SA6D170E-2C-WD issues by inspecting the turbocharger for shaft play and checking the charge air cooler for leaks that cause black smoke or power loss. Replace worn piston rings and cylinder liners if compression drops or oil consumption exceeds limits. Inspect the fuel injection nozzles for clogging or leakage, which disrupts combustion efficiency. Check the water pump impeller and thermostat for cooling system failures. Verify the integrity of the head gasket and lower gasket kit during any coolant leak diagnosis to ensure proper sealing of the inline-six block.
Overhaul & Rebuild Points
Plan an inframe overhaul for the SA6D170E-2C-WD when wear measurements on the crankshaft journals, camshaft lobes, or connecting rod bearings approach factory limits. Replace the complete piston kit, including pins and clips, if cylinder wall taper or scoring is detected. Inspect the cylinder head for warping or cracked valves during any major disassembly. Use a comprehensive inframe overhaul kit to replace all bearings, seals, gaskets, and the oil pump. This restores compression and oil pressure without removing the engine from the chassis, extending the life of the D375A-5 or WA600-3 host machine.
Seasonal & Environment Servicing
In cold climates, ensure the intake air heater functions correctly to aid cold starts for the SA6D170E-2C-WD. Use the correct grade of Komatsu Genuine Lubricants to maintain viscosity in extreme temperatures. In dusty environments, frequently check the air filter restriction indicator and clean the radiator and oil cooler fins to prevent overheating. Inspect the fuel water separator daily to prevent water contamination in the injection system. Verify the integrity of all hydraulic hoses and clamps, as UV exposure and heat cycles can accelerate degradation in quarry or mining applications.
SA6D170E-2C-WD(S/N 21546-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 07281-00197 | Clamp,(With Pre-Fuel Filter) | Fuel system service | Check fitment → |
| 600-311-8331 | Cartridge,Fuel Filter | Fuel system service | Check fitment → |
| 6127-71-6701 | Fuel Filter Ass'Y | Fuel system service | Check fitment → |
| 07000-02075 | O-Ring,Steering Oil Filter | Lubrication service | Check fitment → |
| 600-181-4501 | Element Ass'Y,Outer | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
SA6D170E-2C-WD(S/N 21546-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| CA115 | Engine crankshaft speed sensor failure | Broken sensor, wiring issue, or connector corrosion | Replace the speed sensor and verify the voltage at the pin connector |
| CA441 | Battery voltage too low | Alternator failure, battery degradation, or loose connections | Replace the alternator or battery and check the voltage regulator |
| CA442 | Battery voltage too high | Alternator regulator failure or voltage spike | Replace the alternator or battery and check the voltage regulator |
| CA122 | Intake air pressure sensor feedback voltage too high | Sensor malfunction or wiring short | Verify the intake pressure sensor and wiring |
| CA123 | Intake air pressure sensor feedback voltage too low | Sensor short or airflow restriction | Check for a sensor short or an airflow restriction |
| CA451 | Common rail pressure sensor feedback value too high | Fuel rail sensor malfunction or actual overpressure condition | Diagnose the fuel rail pressure sensor or pump lines |
| CA452 | Common rail pressure sensor feedback value too low | Fuel rail sensor malfunction or low pressure condition | Diagnose the fuel rail pressure sensor or pump lines |
| CA234 | Engine overspeed | Throttle calibration error, engine load cycle issue, or operator misuse | Verify throttle calibration, engine load cycle, or operator misuse |
| AA10NX | Air cleaner clogging | Dirty or blocked air filter element | Replace the air filter |
| B@BCNS | Engine coolant overheating | Radiator blockage, fan belt failure, or low coolant level | Check radiator fins, fan belt, and coolant level |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
SA6D170E-2C-WD(S/N 21546-UP) attachments & work tools
Wheel Loader Attachments
The SA6D170E-2C-WD engine powers the WA600-3 and WA700-3 wheel loader series. Typical bucket capacities range from 6.4 to 9.2 cubic meters (8.4 to 12.0 cu.yd) depending on the specific WA600 or WA700 variant. These machines utilize standard quick-coupler systems compatible with Komatsu's heavy-duty loader tooling.
Bulldozer Attachments
This engine configuration is used in the D375A-5 bulldozer. Blade capacities for this class typically range from 18.5 to 22.0 cubic meters (24.2 to 28.8 cu.yd). Factory configurations include semi-U or U-blades with varying guard options for rock or general earthmoving applications.
Dump Truck Bodies
The SA6D170E-2C-WD is specified for the HD465-7 and HD605-7 off-highway dump trucks. Body capacities vary by configuration, generally supporting payloads consistent with the 465 and 605 class ratings. Factory options include standard or high-lift tailgates and specific underbody wear packages.
Excavator Attachments
While the SA6D170E-2C-WD is primarily linked to the WA600-3 and D375A-5 in the provided data, the broader SAA6D170E-3 series powers the PC1250-7 excavator. Excavator tooling includes standard and heavy-duty booms/sticks with bucket capacities varying by application. Coupler systems are model-specific to the PC1250-7 undercarriage.
Generator Sets
The engine is used in industrial generator sets such as the DCA-800SSK2, EGS950-6, and EGS1050-7. These units do not use mechanical work tools but require specific hydraulic and electrical interface kits for the generator head. Factory guarding includes sound-attenuated canopies and weather protection packages.
All SA6D170E-2C-WD(S/N 21546-UP) assemblies by section
Every catalogued assembly group for the Komatsu SA6D170E-2C-WD(S/N 21546-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Engine
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : After Cooler Water Piping(#21564-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***30 | Bolt,(With Body Positioner) | 5 |
| 01***45 | Bolt,(With Water Separator Type) | 8 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Air Cleaner And Mounting
| 01***70 | Bolt - Bracket And Oil Inlet Tubemounting | 2 |
| 01***75 | Bolt (M10-1.50x75) | 2 |
| 01***08 | Nut, Regular Hexagon (M10-1.50) | 8 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Air Compressor (Inner Parts)(#21564-)
| 61***00 | Air Compressor Ass'Y | 1 |
| DK***00 | Cylinder | 1 |
| DK***00 | Nipple | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Air Compressor Gasket Kit
| 07***15 | O-Ring,(Without Boom Kickout) | 1 |
| 07***85 | O-Ring,(Without Fuel Level Gauge) | 1 |
| 07***28 | O-Ring, Strainer To Control Pump Line | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Air Compressor Mounting(#21564-)
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 2 |
| 01***70 | Bolt - Accumulator Mounting Bracket | 2 |
| 01***75 | Bolt - Tube Mounting | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Air Compressor Piping (1/2)(#21564-)
| 01***55 | Screw | 3 |
| 01***60 | Bolt,(F4320-52a0 -5- ) | 2 |
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 8 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Air Compressor Piping (2/2)(#21564-)
| 01***16 | Bolt - Seat And Tether Belt Mounting | 1 |
| 01***45 | Bolt,(With Water Separator Type) | 1 |
| 01***06 | Nut, Regular Hexagon (M8-1.25) | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Air Intake Manifold And After Cooler(#21564-)
| 01***40 | Screw, Hex Socket | 4 |
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
| 01***95 | Capscrew | 15 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Alternator (75a) (Inner Parts)
| 60***70 | Alternator A. (75a) | 1 |
| SD***X0 | Coil Assembly | 1 |
| SD***X0 | Washer | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Alternator Drive
| 01***30 | Bolt,(With Body Positioner) | 1 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 1 |
| 04***24 | Pin, Spring | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Alternator Mounting (75a)
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***40 | Bolt (Op) | 2 |
| 01***55 | Bolt - Mount Cage To Transmission Case | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Auto Primming System (1/2)
| 01***12 | Bolt - Front Cover Mounting | 4 |
| 01***65 | Capscrew | 7 |
| 01***19 | Washer,(Not Used With Ventilator) | 4 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Auto Primming System (2/2)
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***75 | Bolt (M10-1.50x75) | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Camfollwer Cover
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Camshaft
| 01***32 | Washer,(Not Used With Emergency Str.) | 12 |
| 04***38 | Key | 1 |
| 04***12 | Ring, Snap (4) | 4 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Cooling Fan(#21564-)
| 01***75 | Bolt - Tube Mounting | 6 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 6 |
| 60***20 | Fan,Reversible | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Corrosion Resistor
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***50 | Screw | 1 |
| 01***95 | Bolt | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Crank Pulley(#21564-)
| 61***20 | Washer | 6 |
| 61***11 | Pulley? Hardening | 1 |
| 61***22 | Bolt | 6 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Crankshaft
| 04***28 | Key, Plain Woodruff | 1 |
| 04***24 | Pin,Dowel (For No.3 Housing) | 1 |
| 61***00 | Bearing Assembly | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Cylinder Block
| 01***18 | Bolt | 6 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 6 |
| 04***14 | Pin, Dowel | 2 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Cylinder Block Blind Cover
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 2 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Cylinder Block Gasket Kit
| 04***12 | Lock (Kit) | 1 |
| 07***09 | O-Ring,(F4350-61a0 -33 ) | 3 |
| 07***12 | O-Ring, Between Valve And Pump | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Cylinder Head
| 07***28 | O-Ring,(For Hd325-6?Hm400-1) (A2110) | 2 |
| 07***08 | Plug (Kit) | 4 |
| 07***11 | Plug,(For Shipping) | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Cylinder Head Cover
| 61***12 | Cover,Head | 6 |
| 61***81 | Packing,Nozzle Holder (K1) | 6 |
| 61***12 | Gasket, Head Cover | 6 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Cylinder Head Gasket Kit
| 02***43 | O-Ring,Water Manifold | 2 |
| 02***75 | O-Ring,(For Japan) (K1) | 4 |
| 02***81 | O-Ring,Air Connector | 4 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Damper
| 61***01 | Damper | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Engine Stop Motor
| 01***25 | Capscrew | 1 |
| 01***45 | Bolt | 3 |
| 01***16 | Bolt, Battery To Frame Ground Wire Attaching | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Enigne Mounting
| 01***50 | Bolt | 8 |
| 01***45 | Washer,(Without R.O.P.S.) | 8 |
| 04***34 | Pin-Dowel, Pin,Dowel (For Shipping) | 4 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Exhaust Manifold
| 01***90 | Bolt | 24 |
| 07***08 | Plug | 2 |
| 61***90 | Spacer | 24 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Fan Belt(#21564-)
| 04***70 | V-Belt Set | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Fan Drive(#21564-)
| 01***50 | Bolt,(Not Used When With Cab) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***45 | Bolt, Mounting Cranking Motor | 6 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Flywheel
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Flywheel Housing(#21564-)
| 01***45 | Bolt, Mount Bracket | 4 |
| 01***55 | Bolt | 6 |
| 01***60 | Bolt,(Except Pll) | 2 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Front Cover
| 01***35 | Bolt | 4 |
| 01***40 | Capscrew | 2 |
| 01***50 | Bolt,(Not Used When With Cab) | 3 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Front Cover Mounting
| 01***16 | Bolt - Seat And Tether Belt Mounting | 9 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 9 |
| 61***60 | Pointer | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Front Power Take Off
| 01***25 | Bolt,(Rear Attachment Less) | 6 |
| 01***25 | Washer,Spring?(Sandy And Dusty Spec.) | 6 |
| 04***18 | Ring, Snap | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Fuel Filter
| 01***70 | Screw | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***60 | Bolt,(F4320-52a0 -5- ) | 3 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Fuel Injection Pump (Coupling) (Inner Parts)
| DK***00 | Bolt | 2 |
| DK***00 | Bolt | 6 |
| DK***00 | Coupling | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Fuel Injection Pump (Feed Pump) (Inner Parts)
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Fuel Injection Pump (Governor) (1/2) (Inner Parts)
| DK***00 | Gasket | 1 |
| DK***00 | Gear | 1 |
| DK***00 | Shim? 2.00mm,(High Altitude Spec.) | 0 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Fuel Injection Pump (Governor) (2/2) (Inner Parts)
| DK***80 | Shim? 0.5mm | 0 |
| DK***70 | Seal,Oil | 1 |
| DK***40 | Gasket,Air Compressor | 4 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Fuel Injection Pump (Pump) (1/2) (Inner Parts)
| 61***10 | Injection Pump A | 1 |
| DK***30 | Bearing,Roller | 1 |
| DK***00 | Coupling | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Fuel Injection Pump (Pump) (2/2) (Inner Parts)
| DK***00 | Nut | 12 |
| DK***00 | Spring | 1 |
| DK***00 | Shim? 0.875mm | 0 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Fuel Injection Pump Bracket And Piping
| 01***30 | Screw | 4 |
| 01***35 | Bolt,(For Fix Position) | 4 |
| 01***50 | Bolt,(Spark Arrester Spec.) | 2 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Fuel Injection Pump Drive
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 5 |
| 01***12 | Nut | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Fuel Injection Pump Mounting
| 01***90 | Bolt,(For No?1 And No?3 Housing) | 4 |
| 07***10 | Connector, Grease Fitting | 1 |
| 61***30 | Pin,Dowel | 2 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Fuel Return
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
| 01***40 | Bolt (Op) | 1 |
| 01***55 | Bolt,(See Service News) | 2 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Head Cover Related Parts
| 01***55 | Bolt,(See Service News) | 28 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 28 |
| 01***16 | Washer,(With Shoe Slip Control) | 28 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Holder (Inner Parts)
| 61***01 | Nozzle Holder Ass'Y | 6 |
| 61***11 | Holder Ass'Y | 1 |
| 61***20 | Nozzle | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Idler Gear
| 01***35 | Bolt,(Not Shown) | 6 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 6 |
| 01***45 | Washer,(Without R.O.P.S.) | 3 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Injection Nozzle
| 07***14 | Tube, Spill | 5 |
| 07***80 | Clip | 10 |
| 61***10 | Bolt,Nozzle Holder | 12 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Lubricating Oil Cooler
| 01***16 | Bolt - Box Mounting | 10 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***65 | Capscrew | 3 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Lubricating Oil Filter
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Lubricating Oil Pump
| 01***70 | Bolt - Bracket And Oil Inlet Tubemounting | 2 |
| 01***40 | Bolt,For Weight Adjusting Bolt | 4 |
| 01***20 | Bolt,(Forwarded Individually Parts) | 6 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Muffler Ejector Piping
| 01***25 | Bolt,Joint | 4 |
| 01***65 | Bolt,(For Alternator Bracket Mount) | 1 |
| 01***85 | Screw | 2 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Muffler Mounting
| 01***35 | Bolt | 1 |
| 01***30 | Bolt | 2 |
| 01***70 | Bolt | 4 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Name Plate And Caution Plate (English)(#21564-)
| 04***50 | Screw | 4 |
| 61***51 | Plate? Name,(Limited Supply) | 1 |
| 61***61 | Plate,Connect | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Oil Cooler Mounting Parts
| 01***25 | Bolt,(Rear Attachment Less) | 6 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 5 |
| 01***50 | Bolt,(Spark Arrester Spec.) | 3 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Oil Filler
| 01***30 | Bolt,(With Body Positioner) | 4 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 2 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 6 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Oil Level Gauge
| 61***10 | Bushing, Oil Gauge Guide | 1 |
| 61***20 | Collar | 1 |
| 61***30 | Nut,(For Shipping) | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Oil Pan And Suction Tube
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(With Body Positioner) | 49 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 2 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Piston
| 02***13 | Pin, Dowel | 4 |
| 61***10 | Pin. Piston | 6 |
| 61***80 | Piston Ring Ass'Y,Per Cylinder | 6 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Power Take Off(#21564-)
| 01***60 | Capscrew | 10 |
| 01***30 | Bolt,(With Body Positioner) | 6 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 2 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Rocker Arm And Housing
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 1 |
| 42***10 | Bracket | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Rocker Arm(#21564-)
| 01***55 | Bolt - Mount Cage To Transmission Case | 6 |
| 01***90 | Bolt,For Weight Adjusting Bolt | 36 |
| 01***15 | Bolt | 6 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Safety Guard
| 01***20 | Bolt,(For Mono Lever Steering) | 4 |
| 01***35 | Bolt,(F4320-52a0 -5 ) | 2 |
| 01***85 | Bolt,(Used With Pin Puller) | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Starting Motor (11kw) (Inner Parts)(#21564-)
| 60***61 | Starting Motor Ass'Y,(11kw) | 2 |
| SD***X9 | Rear Bracket Ass'Y | 1 |
| SD***X0 | Pinion Clutch Ass'Y | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Starting Motor Mounting (11kw)(#21564-)
| 01***45 | Bolt,(For Slag Handling) | 6 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 2 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Tamper Proof Kit
| 61***20 | Tamper Proof Kit | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Tension Pulley(#21564-)
| 01***35 | Bolt - Torque Converter Totransmission Mounting | 3 |
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Thermostat Housing
| 01***30 | Bolt,(With Body Positioner) | 5 |
| 01***40 | Bolt (Op) | 1 |
| 01***65 | Bolt - Return Line And Suction Linehose Clamps | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Turbocharger (Inner Parts)
| 01***16 | Bolt | 4 |
| 01***16 | Bolt | 8 |
| 04***08 | Pin, Dowel | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Turbocharger Lubricating Oil Piping
| 01***16 | Bolt - Seat And Tether Belt Mounting | 1 |
| 01***20 | Bolt,(For Mono Lever Steering) | 1 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 4 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Turbocharger Mounting
| 01***25 | Bolt,Joint | 8 |
| 61***90 | Nut, Mounting | 4 |
| 61***10 | Gasket,Turbocharger Mounting | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Water Manifold
| 01***80 | Bolt,(With Corrosion Resistor) | 1 |
| 01***30 | Washer,Spring(Sandy?Dusty Terrain S.) | 1 |
| 01***32 | Washer, (Without Emergency Steering) | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Water Pump
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***30 | Bolt,(With Body Positioner) | 7 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Water Pump Gasket Kit
| 07***45 | O-Ring - (K6) | 1 |
| 07***45 | O-Ring,Retainer | 1 |
| 07***12 | O-Ring,(F4350-59a1 -17 ) | 1 |
Komatsu : Sa6d170e-2c-Wd(S/N 21546-Up) : Engine : Water Temperature
| 01***12 | Bolt - Front Cover Mounting | 1 |
| 01***20 | Bolt,(Without Rops Guard? Canopy) | 1 |
| 01***08 | Washer,(For 1 Attachment And Pat) | 1 |
SA6D170E-2C-WD(S/N 21546-UP) serial number reference
The engine serial number plate is stamped on the engine block, typically on the left side near the injection pump. The prefix is the alphanumeric code identifying the engine model and configuration, distinct from the machine chassis serial number.
| Prefix | Identifies | Notes |
|---|---|---|
| SA6D170E-2C-WD | Engine | Komatsu SA6D170E-2C-WD engine family. S/N 21546-UP. Series/generation: 170 Series. Configuration: 6-cylinder, water-cooled, turbocharged, aftercooled. Region: Export/Global. Years: Not documented for this exact serial range — verify with your dealer. |
Frequently asked questions
What engine does the Komatsu SA6D170E-2C-WD(S/N 21546-UP) use?
It uses the Komatsu SA6D170E-2C-WD, a 6-cylinder, inline, turbocharged, water-cooled diesel engine from the 170 Series family.
What is the operating weight of machines powered by this engine?
Operating weight varies by configuration and host machine, typically ranging from 42,900 kg to 97,100 kg for models like the D375A-5 dozer and WA600-3 loader.
What replaced the SA6D170E-2C-WD engine?
It was succeeded by the 170-3 Series engines, including the SA6D170E-3 and SAA6D170E-3, which feature updated emissions compliance and electronic control systems.
What SA6D170E-2C-WD(S/N 21546-UP) owners discuss
What are the known powertrain and hydraulic behaviors for machines using the SA6D170E-2C-WD engine?
What undercarriage or wear patterns are typical for machines powered by this engine series?
What are the common engine quirks per the SA6D170E-2C-WD series?
What are the common electrical and sensor issues for this engine?
What should be checked when buying a used machine with the SA6D170E-2C-WD engine?
What safety-critical fix is associated with the engine's cooling system?
What safety-critical fix is associated with the engine's fuel system?
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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