For over 55 years, Manders Diesel has been a source for reliable used trucks, new & used parts, and service. Manders Diesel is an authorized Mack Service Dealer and has thousands of new and used Mack parts, plus a large selection of trucks and parts for other manufacturers. As an authorized Mack Service Dealer, we stock over 50,000 new Mack parts. If we do not have the item you need, we can order the necessary parts directly from Mack.