• Fast Shipping Nationwide

  • Inspected Engine Parts

  • Free Pickup

    Best Shipping Rates

  • 25+ Years Industry Experience

  • Call or Chat Today

    (800) 971-3019

  • New & Used Diesel Components

Shop by Brand

CARTERPILLAR
CUMMINS
DETROIT
HORTON
ISUZU DIESEL
MACK
PACCAR
VOLVO
CARTERPILLAR
CUMMINS
DETROIT
HORTON
ISUZU DIESEL
MACK
PACCAR
VOLVO

Shop by Part Type

Find the Right Engine Part Faster

Not sure which engine part you need? Whether you’re replacing an ECM, turbocharger, fan clutch, or compressor, our team can help identify the correct part based on engine brand, model, or part number. Simply share your details and we’ll assist you.

Get Help Finding a Part  Prefer immediate help? Call (800) 971-3019

Used Diesel Engine Parts

View Used Engine Parts

New Diesel Engine Parts

View New Engine Parts

JJ Engine Parts

Quality New & Used Diesel Engine Parts

JJ Engine Parts supplies a wide range of new and used diesel engine parts for leading engine brands including Cummins, Caterpillar, Detroit, Volvo, Isuzu, Mack, PACCAR, and Horton.

Our inventory includes high-demand engine components such as ECMs, turbochargers, fan clutches, fuel injectors, A/C compressors, air brake compressors, and automatic transmissions. All parts are available in new and used options to fit different repair needs and budgets.

Each engine part is inspected before shipping. With over 25 years of industry experience, our team supports repair shops, fleets, contractors, and owner-operators with fast U.S. nationwide shipping. If you’re unsure which part fits your engine, our specialists are ready to help.

View Inventory Contact Us

Frequently Asked Questions

Do you sell complete engines or only engine parts?

Yes, we sell diesel engine parts only. Complete engines are available separately through our engine division at JJRebuilders.com.

How do I know which engine part is right for my engine?

Share your engine brand, model, serial number, or part number, and our team will help you identify the correct part. Get Help Finding a Part

Are your diesel engine parts inspected before shipping?

Yes. All used parts are inspected before shipping. New parts are sourced from trusted OEM and aftermarket suppliers.

Do you offer both new and used diesel engine parts?

Yes. We offer both options so customers can choose based on availability and budget.

Do you ship nationwide?

Yes. We ship across the United States. Shipping times vary by part and destination.

Back to top