; HomeHeavy Duty Truck PartsEngines & Engine PartsEngine BrakesCumminsM11 / ISM 10.8Used 1998 Cummins M11 / ISM 10.8 Engine Brake Used 1998 Cummins M11 / ISM 10.8 Engine Brake Unfortunately this part is temporarily unavailable. View other Cummins M11 / ISM 10.8 Engine Brakes