QPS Diesel has been in the heavy truck parts buisness for almost 40 years. We specialize in the export of heavy duty diesel motors, transmissions, and rear ends. We average over 800 motors in stock and ready to ship. Our stock include all models of Cummins, Caterpillar, Mack, Detroit Diesel, International Harverster, and Isuzu. We will sell by the individual piece or the trailer load.