Part number lookup
174978 Replacement Parts
Cross-reference and compare 2 replacement listings for OEM / aftermarket part number 174978. 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
- Caterpillar · 320D
- Caterpillar · C9
- Caterpillar · s: Fit for following models: Caterpillar Material Handler: MH3049 Caterpillar Petroleum Package: CX31-C9I Caterpillar Petroleum Transmission: TH31-E61
- Part Number
- Caterpillar CAT Excavator 320D Engine C9 Wind-cooling Turbo S310G122 Turbocharger 250-7701 10R-26
- Caterpillar CAT Excavator 320D
Frequently Asked Questions
What parts replace OEM number 174978?
This page lists 2 replacement listings indexed under 174978. Compare cross references, applications, and pricing before ordering.
How do I confirm fitment for 174978?
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 174978 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.