Engine Parts Guides & Resources
Practical guidance on sourcing the right Cummins and Caterpillar spare parts — from genuine vs OEM, to identifying your engine and matching parts by serial number.
Genuine vs OEM Cummins Parts: What's the Difference?
The difference between genuine and OEM Cummins parts, the risks of getting it wrong, and how to buy correctly.
Read guide › CumminsHow to Find the Right Cummins Spare Part Using Your ESN
Use your Engine Serial Number to get an accurate Cummins parts quote first time, and avoid ordering the wrong component.
Read guide › CumminsCummins QSK Engine Series Explained: Applications & Parts
A guide to the Cummins QSK19–QSK60 high-horsepower range — where they're used and the spare parts most commonly required.
Read guide › CaterpillarGenuine vs OEM Caterpillar (CAT) Parts: Key Differences
Genuine and OEM aren't the same thing on a CAT engine. How to tell them apart and avoid costly compatibility mistakes.
Read guide › CaterpillarCAT C-Series vs 3000/3500 Series: Which Spares Do You Need?
How the C-Series, 3000, and 3500 CAT engine ranges differ — and what that means for sourcing the right spares.
Read guide › CaterpillarCaterpillar Marine Engine Spare Parts: Propulsion & Power
A guide to CAT marine engines — propulsion and auxiliary platforms — and the spare parts most commonly required.
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