St Joseph Diesel was established in 1976 by Steve Webster and his wife Rose Webster. The company specialized in diesel fuel injection repair.

Today, St Joseph Diesel is in its second generation as a family business. They have grown into a full product line factory authorized fuel injection repair station as well as a distributor for all major brands of turbochargers, injectors, and fuel injection pumps. They offer many performance products for automotive, agriculture, and construction applications.  Nothing is too small or too big.