Part number lookup
D398B Replacement Parts
Cross-reference and compare 2 replacement listings for OEM / aftermarket part number D398B. Use this part-number page — not a generic equipment or brand hub — to review price, availability, and fitment before ordering.
2 Matching Products
Part Numbers and Cross References
Applications and Fitment Summary
- Part Number
- Caterpillar CAT Engine D379B D398B D399 SR4 Tractor D9H
Frequently Asked Questions
What parts replace OEM number D398B?
This page lists 2 replacement listings indexed under D398B. Compare cross references, applications, and pricing before ordering.
How do I confirm fitment for D398B?
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 D398B 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.