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Excavator Engine Parts

233-5221 Engine Oil Pump Group for Cat C11 C13 345C 345D

Name: 233-5221 Engine Oil Pump Group for Cat C11 C13 345C 345D
Brand: EexcavaStart
SKU: 233-5221

OEM / reference233-5221

SpecificationC11/C13 Engine Oil Pump Group

Catalog ID64371530

Engine oil-pump group identified by part number 233-5221 for Caterpillar C11 and C13 engine arrangements. Published parts records list this group in C13 lubrication systems and support equipment including 345-series excavators, motor graders, wheel loaders and scraper applications. The 233-5220 pump is a component record within the 233-5221 group, not presented here as a separate direct interchange. Confirm the engine arrangement and group number before ordering.

Fitment status: Verified · Checked 2026-07-28

Product Type: Engine Oil Pump Group
Product Brand: EexcavaStart
Engine System: Lubrication system
Drive: Gear driven
Condition: New replacement part

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Part-number relationships

Relationship	Reference family	Number
Primary Manufacturer Part Number	Complete engine oil-pump group	233-5221
Formatted Alias	Same number without separator	2335221
Related Component Number	Pump component shown within the group record	233-5220

Evidence record

Source: Exact-reference evidence retained for internal audit
Evidence grade: catalog-supported
Checked: 2026-07-28

Source URLs, catalog files and local evidence paths are stored in the protected product audit record and are not public outbound links.

Product fitment guide

Part numbers and compatible models

Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.

Part identification

Reference numbers

Primary number

233-5221

Formatting alias

2335221

Related assembly

233-5220

Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.

Product summary

C11/C13 Engine Oil Pump Group

Category: Excavator Engine Parts
Catalog ID: 64371530
Photo views: 5

Before ordering

Confirm these details

Match the complete part number on the original component.
Compare connectors, mounting points and visible dimensions with the product photos.
Confirm the exact machine or engine model and serial range before ordering.

Machine fitment

Compatible model references

4 model references

Engine families: Caterpillar C11 / C13
Excavator family: Caterpillar 345B / 345C / 345D
Additional published equipment: Selected 14M / 16M / 18M graders, 621H / 621K / 623H / 623K scrapers and 966 / 980 loaders
Fitment limitation: Confirm engine arrangement and complete pump-group number

Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.

Quick fitment answers

Common questions about 233-5221

Which machines use 233-5221?

Recorded compatible model references include Engine families: Caterpillar C11 / C13, Excavator family: Caterpillar 345B / 345C / 345D, Additional published equipment: Selected 14M / 16M / 18M graders, 621H / 621K / 623H / 623K scrapers and 966 / 980 loaders, Fitment limitation: Confirm engine arrangement and complete pump-group number. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 233-5221?

Formatting aliases for the same number: 2335221. Related assembly numbers (not direct interchanges): 233-5220.

How do I confirm 233-5221 before ordering?

Match the complete part number on the original component. Compare connectors, mounting points and visible dimensions with the product photos. Confirm the exact machine or engine model and serial range before ordering. Send clear photos of the original unit and connector layout when requesting a quote.

Continue comparing recovered references from the same system.

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