The Cummins 4088431 Diesel Fuel Injector is a premium OEM replacement component engineered to restore optimal fuel delivery and efficiency to your heavy-duty engine. Built to exact factory standards, this injector assembly features a robust metallic cylindrical body equipped with a top actuator ball joint for precise mechanical actuation. It boasts precision-machined sealing surfaces fitted with high-quality O-rings to ensure exceptional pressure retention and prevent leaks. The advanced nozzle assembly at the base delivers a highly atomized fuel spray pattern, promoting complete combustion, reducing emissions, and maximizing horsepower in Cummins diesel engines.