Shop Heavy-Duty Diesel Engine Parts
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Cummins X12 Liner Kit, New (161643)
$118.40HHP#: P356547View product -
Cummins X12 Main Engine Bearing Set, New (2881961)
$486.37HHP#: P349125View product -
Cummins X12 Piston Cylinder Kit, New (2881960)
$539.61HHP#: P355954View product -
Cummins X12 PistonLess Inframe Engine Rebuild Kit, New (1240017)
$2,662.94HHP#: P355953Add to cart -
Cummins X15 Ceramic Coated Turbocharger, Remanufactured (5459710)
$4,319.35HHP#: P356324RView product -

Cummins X15 Compressor, New | (2882111)
$315.58HHP#: P278454View product -
Cummins X15 Connecting Rod, Remanufactured (4059429RX)
$311.67HHP#: P132473RView product -
Cummins X15 Crankshaft Thrust Bearing, New (171909)
$26.43HHP#: P356879View product -
Cummins X15 EGR Cooler, Remanufactured (3693370)
$2,453.44HHP#: P349329RView product -
Cummins X15 Engine Rebuild Kit without Piston, New (ISX141386)
$2,299.82HHP#: P356143View product -
Cummins X15 Front Sump Oil Pan, New (4386821)
$841.20HHP#: P357136View product -
Cummins X15 Fuel Injector Seal Kit, New (131203)
$59.48HHP#: P356725View product
Showing 24121–24132 of 32944 results
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Aftermarket Parts for Cummins, Caterpillar, Detroit Diesel and Many More
At Highway & Heavy Parts, we specialize in providing top-quality parts for big trucks and agricultural equipment, featuring industry-leading brands like Cummins, Caterpillar, and Detroit Diesel. Whether you’re looking for complete engine rebuild kits, fuel injectors, turbochargers, or gaskets, we have everything you need to keep your diesel engine running at peak performance.
Premium Diesel Engine Parts for Big Trucks & Agriculture
We know that downtime is costly. That’s why we offer high-quality, OEM-spec aftermarket parts designed to meet or exceed manufacturer standards. Our extensive inventory ensures you get the right part quickly, helping you stay on the road or in the field with confidence. A few of the major diesel manufacturers which we produce and distribute replacement parts for are Cummins, Caterpillar, and Detroit Diesel. Check out some of the aftermarket diesel parts we carry for these big trucks and agricultural equipment.
Cummins Diesel Engine Parts
From the reliable Cummins ISX to the hardworking 5.9L and 6.7L engines, we provide:
- Engine rebuild kits
- Fuel injectors & pumps
- Turbochargers
- Cylinder heads & gaskets
Caterpillar Diesel Engine Parts
Caterpillar engines power some of the toughest machines on the road and in agriculture. We stock parts for C15, 3406, 3126, and other popular CAT engines, including:
- Overhaul kits
- Turbochargers
- Cylinder heads
- Oil pumps & more
Detroit Diesel Engine Parts
Detroit Diesel engines are built for power and durability. Whether you have a Series 60, DD13, DD15, or DD16, we have the parts to keep it running strong:
- Engine rebuild kits
- Fuel injectors
- Camshafts & lifters
- Turbochargers
Why Choose Highway & Heavy Parts?
Quality You Can Trust – We source premium aftermarket and OEM-spec parts.
Fast & Reliable Shipping – Get your parts when you need them.
Expert Support – Our ASE-certified diesel technicians are here to help you find the right part.
Competitive Pricing – Get high-performance parts without breaking the bank.
Get back on the road or in the field with confidence! Browse our selection of Cummins, Caterpillar, and Detroit Diesel engine parts today. If you have any questions, contact our expert team for personalized support!








