What is it: A complete engine is a fully dressed engine remanufactured to exacting standards and built on a Cummins ReCon® assembly line. These drop-in engines include the latest improvements in design and material, and every single unit is hot tested to ensure performance and quality.

Why you need it: If you are looking at replacing your entire engine, this would be the right choice for you. Engines are built to Cummins factory specifications and are backed by the best warranty in the industry. Engine replacement generally takes only a couple of days – from diagnosis to completion – getting trucks back to work fast. Cummins remanufactured engines also provide greater value through better fuel efficiency, lower maintenance costs and lower emissions than a typical repaired engine, and substantially better potential resale price of the vehicle.

Long Block

What is it: A long block includes engine block and rotating internals (crankshaft, pistons, and connecting rods/bearings).

Why you need it: In situations where many of the external components are still viable, a remanufactured long block can be an attractive alternative. Built to the same standards as remanufactured engines, the long block option allows reuse of external components such as the turbo, lift pump, wiring harness, fuel pump and fuel lines.

Short Block

What is it: A short block includes the engine block, crank, rods, main, and thrust bearings. 

Why you need it: In the event that an engine block shows extensive wear or significant damage, a short block is a great option. This option allows for the maximum reuse of parts including the cylinder head.

For a detailed list of part numbers and a comparison of Long Block and Short Block products: