Collection: Overhaul Kits Diesel Engine is proud to offer a comprehensive range of Maxiforce© overhaul kits for Cummins® diesel engines and other makes. Our Cummins® diesel engine parts cover the 4B Series, 6B Series & 6C Series, as well as 3.9 QSB, 4.5 QSB, 5.9 QSB, 6.7 QSB, and 5.9 ISB engines found in agricultural power generation applications. Search this Collection/Category on our website for information on Overhaul Kits for other makes of equipment Diesel Engines. You can use the "Search" feature to find your Make of Engine in the available Overhaul Kits.