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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.

Caterpillar

CAT C32 engine spare parts: marine, generator and industrial

The Caterpillar C32 in marine, generator and industrial service — unit injectors, turbos and the overhaul parts it needs.

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Caterpillar

CAT C18 engine spare parts: marine, generator and industrial

Why application matters on the CAT C18, and the injectors, turbochargers and overhaul parts most commonly required.

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Caterpillar

CAT C15 engine spare parts: C15 and C15 ACERT

The CAT C15's parent-bore block changes overhaul planning — plus MEUI injectors, turbos and kits for C15 and C15 ACERT.

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Caterpillar

CAT 3516 engine spare parts: 3516, 3516B and 3516C

The CAT 3516 displacement trap explained, plus overhaul kits, injectors and turbos for the 3516, 3516B and 3516C.

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Caterpillar

CAT 3406 engine spare parts: 3406B, 3406C and 3406E

Parts for the CAT 3406B, 3406C and 3406E — how the variants differ and the overhaul parts most often needed.

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Cummins

Cummins QSK19 marine engine spare parts

A guide to the Cummins QSK19 marine diesel — MCRS injectors, overhaul kits, turbochargers and cooling components.

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Cummins

Cummins QSM11 marine engine spare parts

The Cummins QSM11's known exhaust manifold weak point, plus the CELECT injectors and overhaul parts it needs.

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Cummins

Cummins QSB6.7 marine engine spare parts

Where the Cummins QSB6.7 is used at sea, and the HPCR injectors, turbos and overhaul parts it most commonly needs.

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Cummins

Cummins KTA19-M marine engine spare parts

The Cummins KTA19-M in marine service — PT fuel system, Holset HX80 turbocharger and the overhaul parts most often needed.

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Cummins

Cummins NT855-M marine engine spare parts

Parts and overhaul guide for the mechanical Cummins NT855-M marine engine — PT injectors, liner kits, turbos and more.

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Cummins

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.

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Cummins

How 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.

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Cummins

Cummins 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.

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Caterpillar

Genuine 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.

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Caterpillar

CAT 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.

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Caterpillar

Caterpillar 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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