Nationwide Truck Parts LLC. sells quality used heavy truck parts, used diesel engines, transmissions and more. We provide quality used heavy truck parts at a reasonable price. Every part we sell comes with a standard warranty and is tested prior to sale. We ship nationwide with same day shipping available. If you do not see the part you are in need of, give us a call at 1-800-457-8826 as our inventory changes daily and we can locate any part you need. We sell Cummins, CAT, Detroit, International, MACK, Mercedes, Isuzu, Mitsubishi diesel engines and more. We have an extensive inventory of diesel engines in stock, with new engines arriving daily, please contact us if you are looking for a specific engine not shown on our site.