When you demand precision-engineered replacement parts for Cummins® and you need them fast, turn to the world-class supplier, MONARK ENGINEERING. From in-frame engine kits to a full line of individual parts for fuel, air, lubrication and cooling systems, we're sure to have the parts you need. Our 98% order fill rates proves it. Just say when you want your parts - even overnight - and consider it done. Fuel Pump Parts Injectors Injectors Parts Special Gasket sets & Overhaul Sets Special Installation Kits