5.9L 12V Cummins Long Blocks (1989–1998)

Elevate your diesel build with our remanufactured 5.9L 12‑valve Cummins long blocks (1989–1998). Designed for both Dodge Ram trucks and industrial applications, each long block is precision-built using premium components, thoroughly inspected, and pressure-tested to ensure durability and reliability. Whether you're restoring, swapping, or upgrading, our long blocks provide a cost-effective, high-performance core for your project. Depend on CPP Diesel for quality that lasts.

FAQ Section

What is a 12‑valve long block?
A long block includes the engine block, crankshaft, pistons, connecting rods, and cam—without the cylinder head—making it a solid core for rebuilds or upgrades.

Will this engine fit my 1995 Dodge Ram?
Yes, these long blocks match the factory bolt pattern and internals used in Dodge Rams from that period, ensuring smooth compatibility.

Why choose a long block over a short block?
Long blocks offer better value if your cylinder head and accessories are still in good condition, allowing for more customization and lower cost.

Are the blocks tested before shipping?
Absolutely. We inspect clearances, torque specs, and cleanliness—testing every unit rigorously and tagging it with build details for your peace of mind.