Younker Bros., Inc. is the most diversified diesel engine repair shop in the Inland Empire. We have the capabilities to rebuild any model of diesel engine you may own including Cummins, Detroit, Cat, International, Mack and the many different industrial engines. Our rebuiltengines include reconditioned heads. Turbocharger, fuel pumps, injectors, water pumps, oilcoolers, aftercoolers and lube pumps are checked out and repaired as needed. We use quality parts that carry the manufacturers warranty which is included as part of our engine warranty. We can supply good quality running used engines. Before you receive our used engines, they are thoroughly checked.