Diesel Tech Diesel Tech also does vehicle repairs on Maintenance, Exhaust and feature these products: Gauges, Intake Systems, Belts, Hoses. They are located on 1685 S State St in San Jacinto. Diesel Tech They have not yet been reviewed on MojoPages.com. They can be reached by calling (951) 766-5777 They accept American Express, Discover, Master Card, Visa. for payment.