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  • DODGE CUMMINS
  • FORD POWERSTROKE
  • GM DURAMAX
  • COMMERCIAL / INDUSTRIAL
  • CUMMINS CONVERSION PARTS
  • CPP GEAR
  • USED PARTS
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    • 5.9L 12V Cummins Short Blocks – 1989–1998

    If you are rebuilding a first-generation Dodge Ram or planning a dependable 12-valve Cummins project, our 5.9L 12V Cummins short blocks for 1989-1998 trucks give you a strong foundation to build from. A short block is an excellent choice when your cylinder head and upper engine components are still usable, but the bottom end needs attention due to wear, damage, or a full refresh. These 5.9 Cummins short blocks are a smart solution for stock replacement builds, tow rigs, work trucks, restorations, and performance-minded projects that need a solid base.

    Compared to a full long block or complete crate engine, a 5.9 Cummins short block can be a more cost-effective route when you want to reuse select parts and keep more control over the final build. For many customers, that means a better balance of budget, durability, and customization. Whether you are replacing a tired original engine, planning a clean 12V swap, or building a reliable street and towing setup, CPP Diesel helps make the process easier with quality Cummins engine options and real diesel support.

    Shop our 1989-1998 5.9L 12V Cummins short blocks below and choose the configuration that fits your project. If you need more complete options, be sure to also compare our 5.9L 12V Cummins long blocks and reman Cummins engine options to find the right setup for your truck, build goals, and budget.

    What Comes in a 5.9 Cummins Short Block?

    A 5.9 Cummins short block includes the engine block, crankshaft, pistons, and bearings, professionally assembled and ready for installation. This configuration gives you a solid bottom-end foundation while allowing you to reuse or upgrade your existing cylinder head, valvetrain, and external components. For many builds, this provides the flexibility to control cost while still ensuring long-term reliability.

     

    Short Block vs Long Block Cummins Engines

    A short block includes the bottom end of the engine—block, crankshaft, pistons, and bearings—while a long block also includes the cylinder head and valvetrain. If your cylinder head and top-end components are still in good condition, a short block is often the most cost-effective option. If you want a more complete solution with fewer parts to transfer, a long block or complete crate engine may be the better choice depending on your build goals.

    Need help choosing the right Cummins short block for your build? Call CPP Diesel for expert guidance before you buy.

    5.9 Cummins Short Block FAQ

    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.

     

     
    • CPP SHORT BLOCK 5.9 CUMMINS ENGINE 89-98 CPP SHORT BLOCK 5.9 CUMMINS ENGINE 89-98
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      CPP SHORT BLOCK 5.9 CUMMINS ENGINE 89-98

      The CPP REMAN Cummins 5.9L 12V Short Block engine from CPP Diesel is the epitome of performance and durability for any serious automotive enthusiast. Developed for the 1989-1998 Cummins 5.9L 12 valve engine model, this crate engine is meticulously...
      $3,495.00
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