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Engine Parts For Sale

Shop engine parts for heavy-duty trucks and diesel applications, including used and rebuilt components for Cummins, Cat, Detroit, and more.

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3 Listings
Isx15 engine bay with bright red painted diesel engine and turbocharger, mounted on wooden pallet; various hoses and components labeled.
1 / 3
Used • Engine

2014 Cummins ISX15

381,223 mi
$12,500
Taylor, Pennsylvania (389 mi away)
View Details
Truck engine block with attached hoses, belts, and a large cooling fan mounted on a wooden pallet. Various yellow tags and labels are attached to components.
1 / 7
Used • Engine

2001 Caterpillar 3126

184,495 mi
$2,900
Sparrow Bush, New York (453 mi away)
View Details
Engine block with hoses and wiring harness, front view, fan blades and red and pink electrical cables visible.
1 / 6
Used • Engine

1992 Cummins EFISB 5.9L

69,393 mi
$3,900
Sparrow Bush, New York (453 mi away)
View Details

Have engine part to sell? List it here to reach thousands of buyers.

About Engine Parts

Engine parts cover everything from complete diesel engines and long blocks to cylinder heads, turbochargers, injectors, ECMs, oil coolers, front gear housings, flywheel housings, and accessory drives. For many buyers, the first decision is not just make and model, but how complete the assembly is. A running take-out engine can shorten downtime, while a bare block, head, or internal component may make more sense for an in-house rebuild. Common heavy-duty platforms include Cummins ISX and ISC families, Caterpillar 3126 and C-series engines, Detroit Diesel Series 60 and DD platforms, and medium-duty engines used in buses, straight trucks, and vocational equipment.

Frequently Asked Questions

1

What should I verify before buying a used diesel engine or major engine part?

Match the engine serial number, CPL, arrangement number, horsepower rating, and emissions family to the truck or equipment you are repairing. Buyers should also confirm ECM compatibility, sensor layout, flywheel housing pattern, accessory mounting, and aftertreatment requirements. On a complete engine, service history, blow-by condition, oil pressure, coolant condition, and a run test or compression information can tell you more than mileage alone.

2

Is it better to buy a complete take-out engine or individual engine parts?

A complete take-out engine is usually the faster path when downtime is the priority and the original engine has multiple failures. Individual components make more sense when the base engine is still sound and the repair is isolated to parts like a turbo, head, injectors, or fuel system components. The right choice depends on labor availability, machine shop access, and how much risk you want to take on hidden internal damage.

3

Why do CPL and serial number matter on Cummins and other diesel engines?

CPL, serial number, and arrangement data identify the exact build specification of the engine. Those numbers affect injector calibration, pistons, camshaft profile, ECM programming, emissions components, and many bolt-on parts. Two engines with the same model name may not interchange cleanly without matching these identifiers.

4

What is the difference between a long block, short block, and complete engine assembly?

A short block typically includes the block, crankshaft, rods, pistons, and related internal rotating components. A long block usually adds the cylinder head and valve train. A complete engine assembly may include fuel system components, turbocharger, manifolds, wiring, ECM, and front-end accessories, but the exact content varies by seller, so buyers should confirm what is actually included.