Create Account

Caterpillar Part reference

0303937pin

Pin, catalog part number 0303937, is listed in the Caterpillar catalog under the hydraulic system. This catalog association is recorded against the Caterpillar PR-450C, and the listing describes the target as a pin only.

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. Subgrouppendulum group
  4. Unit086-9838 pendulum gp s/n 7pj1-99999
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***37pin; (43.3mm)
00***41retainer
0303937pin (current part)
03***70guide

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

View model page

General guidance

Component knowledge

Understanding this component

In general, a pin is a cylindrical fastening or pivot element that locates parts and allows a joint to rotate or articulate. In heavy equipment, pins are used in linkages and pivot points where accurate alignment and load transfer are needed, and the exact role of a given pin depends on the assembly it belongs to.

What to check before ordering

Use part number 0303937 when referring to this pin. Before ordering, confirm the machine model, serial number and assembly location, because the catalog association shown here does not by itself establish compatibility with every machine configuration.