Gomer's Diesel is a 3rd generation, family owned business that started in 1938 by William A. Gomer. USDieselParts.com was born in early 1999. We have since taken pride in the fact that we have what we believe to be the best Internet store with the best customer service in the business. We carry a full line of engine parts and performance parts. Recently we have added complete performance packages to enhance all aspects of engine performance.