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Caterpillar Part reference

0304051washer

Caterpillar part number 0304051 is listed in the catalog as a washer. The catalog records it as an occurrence within a hydraulic system group, under a hydraulic motor group associated with a PR-450C catalog model, so it is shown here as a catalog association rather than a confirmed fit for every machine configuration.

Recorded applications

Models and catalog references

Selected catalog references that list this part. A catalog association does not confirm fitment for every machine or configuration.

Catalog context

Where this part appears

  1. ModelCaterpillar PR-450C
  2. Grouphydraulic system
  3. Subgroupmotor group-hydraulic
  4. Unit1g-5449 motor gp-hydraulic s/n 7pj1-99999 part of 103-1928, 6r-4008 conveyor gp-second stage
Reduced catalog diagram for Caterpillar PR-450C Locked
Diagram previewReduced catalog thumbnail
About diagram access

Check the signed-in Part Book for available diagrams and the complete catalog breakdown.

Parts in this preview

Selected records
Selected catalog parts, with other part numbers masked
Part numberDescription
00***55ring-retaining
03***44spring
0304051washer (current part)
03***88piston

Selected entries from this catalog unit. Other part numbers are masked. Confirm the full breakdown and your machine configuration before ordering.

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General guidance

Component knowledge

Understanding this component

In general, a washer is a flat or shaped disc, often metal, placed under a fastener or between parts to spread load, help seal a joint, or prevent loosening. Exact dimensions, material and any sealing function must be checked against the catalog record for this number.

What to check before ordering

Use part number 0304051 as the reference when ordering. Before purchasing, confirm the recorded catalog conditions for this occurrence, including the parent unit label and serial-number note, against your machine and its serial number.