Medium-Duty & RV Diesel Modules

Motorhomes, Cab & Chassis trucks and medium-duty work trucks carry more weight and spend more time on long grades than a typical pickup, which is where dead pedal and turbo lag are most noticeable. Diesel Modules makes plug-n-drive performance modules for many of the diesel engines used in these vehicles. Each one connects under the hood with OEM-style harnesses and leaves the factory ECM programming in place.

This collection includes modules for Cummins medium-duty engines (5.9L, 6.7L ISB, 8.3L ISC, 8.9L ISL and the 8.9L Stage V), the Caterpillar 3126, C7 and C9, the 6.6L Duramax L5D in the Silverado 4500HD/5500HD and International CV515, the 7.8L Duramax LG4 and Isuzu 6HK1, International MaxxForce DT, 9 and 10, Mercedes MBE900 and 926 engines, and the 6.7L Power Stroke in F-450/F-550 Cab & Chassis trucks and RVs. Several Cummins listings are split by emissions tier and model years, so check the engine data plate or your coach documentation before you choose.

If you are not sure which module matches your coach or truck, use the Year / Engine search at the top of the page, or call or text us with the engine model and year. We will confirm the right module before you order.