Caterpillar Part reference

0045703adapter-pipe

Part 0045703 is cataloged as an adapter-pipe in the Caterpillar catalog. Catalog records list it in association with a Caterpillar PR-450C air system and a Caterpillar 3306B electrical and starting system, but these are catalog occurrences rather than confirmed fitment 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.

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Catalog context

Where this part appears

  1. ModelCaterpillar PR-450C
  2. Groupair system
  3. Subgrouptank group-air
  4. Unit087-0450 tank gp-air s/n 7pj1-99999
Reduced catalog diagram for Caterpillar PR-450C Locked
Diagram previewReduced catalog thumbnail
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Parts in this preview

Selected records
Selected catalog parts, with other part numbers masked
Part numberDescription
00***63elbow, 90 deg street, 3/4in. n.p.t.
0045703adapter-pipe (current part)
00***07elbow; (90 degree)
05***26tee

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, an adapter pipe is a fitting that joins two pipe or line connections that may differ in size, shape, or thread type. In heavy equipment it helps route fluid or air between components while keeping the connection secure. Exact dimensions, materials, and connection types should be confirmed against the catalog before use.

What to check before ordering

Order using part number 0045703 as listed in the catalog. The catalog associations above should be checked against your machine's model and serial number, since recorded conditions for the surrounding assemblies may apply and are not confirmed for this part alone.