Quality New, Used & Rebuilt Diesel Truck Engines

JJ Rebuilders is a leading supplier of quality used diesel truck engines and engine parts. With one of the most extensive inventories in the industry, we stock a full range of engines from top manufacturers including Cummins, Detroit Diesel, Isuzu, John Deere, International, Mercedes, Ford, Paccar, Volvo, Mack, and Caterpillar (CAT).

Our inventory goes beyond complete truck engines—we also carry equipment engines, industrial engines, and marine engines, ensuring solutions for both on-highway and off-highway applications.

We provide a wide selection of engine components and rebuild parts, including engine blocks, cylinder heads, ECMs, and more, making us a trusted partner for engine rebuilders, repair shops, and fleet operators nationwide.

At JJ Rebuilders, we pride ourselves on delivering reliable products, competitive pricing, and fast turnaround times. Most engines are available for same-day shipping, with flexible freight options to meet your deadlines.

Why Choose JJ Rebuilders?

• Over 25 years of expertise in diesel engines and components
• Massive in-stock inventory ready for immediate shipment
• Trusted by fleets, repair facilities, and independent rebuilders
• Nationwide and international shipping services

Whether you’re looking for a replacement engine, hard-to-find components, or a cost-effective solution for your fleet, JJ Rebuilders has the experience and inventory to keep you running strong.