Crafted by KPerformance™, our stainless steel adapter plate allows you to easily bypass the OEM plastic breather valve on your M47 / M57 engine. Ideal for OEM airbox removal, custom intake setup, or external oil catch can installation. Compatible engines: M47, M47N, M47N2, M57, M57N, M57N2 SPECIFICATION: • Direct bolt-on fitment • 201-grade stainless steel • Metal plate thickness: 1.8 mm • Outlet pipe diameter: 16 mm