Turbosmart CompGate40 external wastegates are an ideal match for Turbosmart Gen4WG40 Valve Seats. The valve seat is designed to provide a perfect seal between the Turbosmart CompGate40 external wastegate and your engine, ensuring maximum boost pressure control and performance. With its precision-crafted construction and robust design, Turbosmart's Gen4 WG40 Valve Seat provides superior quality that you can rely on. Installation is simple, with all necessary hardware included in the package