Part number lookup
MM45B Replacement Parts
Cross-reference and compare 1 replacement listing for OEM / aftermarket part number MM45B. Use this part-number page — not a generic equipment or brand hub — to review price, availability, and fitment before ordering.
1 Matching Product
Part Numbers and Cross References
Applications and Fitment Summary
- Part Number
- Caterpillar · s: Caterpillar CAT Excavator:MM45B CORE:452*410*49
Frequently Asked Questions
What parts replace OEM number MM45B?
This page lists 1 replacement listing indexed under MM45B. Compare cross references, applications, and pricing before ordering.
How do I confirm fitment for MM45B?
Match the stamped part number first, then verify machine model, engine code, serial number, mounting points, and photos of your old part before checkout.
Can I request a quote if MM45B is not an exact match?
Yes. Use the fitment inquiry form with your machine plate, engine model, and photos. Support can review alternatives or cross references.