Part Description BACK Mack MP7 (Stock # INJECTOR-52) Injectors $300.00 Quantity 1 Add to Cart Part Type Injectors Serial# . Engine Make Mack Engine Model MP7 Casting# . Condition Used Description , USED W/COMMON RAIL FUEL SYSTEM, 3EA 22378580 NON PUMP, 3EA 22378579 PUMPING