5.9L 12V Cummins Short Blocks – 1989–1998

Looking for a dependable, high-quality engine core? Our remanufactured 5.9L 12‑valve Cummins short blocks (1989–1998) offer exceptional value for both Dodge Ram pickups and industrial engine projects. These are precision-engineered with OE-quality components, thoroughly inspected and ready for installation. Known for legendary reliability and torque, each short block we build provides a robust foundation for restoration, performance upgrades, or industrial repurposing. Get back on the road—or on the job—faster with CPP Diesel.

FAQ Section

What is a 12‑valve Cummins short block?
A 12‑valve short block includes the engine block with crankshaft, pistons, and bearings—without cylinder head. This core is ideal for rebuilds or upgrades.

Is the 5.9L 12‑valve compatible with Dodge Ram transmissions?
Yes! The 5.9L 12‑valve shares the same bolt pattern as the newer Cummins generations, making it an excellent choice for seamless swaps and upgrades.

Why choose a short block over a full crate engine?
Short blocks are more cost-effective when you're retaining a functional head and accessories. Plus, they allow for more customization and tuning options.

Do you test short blocks before shipping?
Yes. Each short block is inspected for clearances, torque specs, and cleanliness. We also tag them with build specifics, giving you confidence and reliability in your build.