Supertech BMW S38 Black Nitrided Exhaust Valve - Set of 12

If you're rebuilding the top end of your BMW S38 engine, especially if it's seen some hard miles or you're aiming for improved performance, new exhaust valves are a critical component. These Supertech exhaust valves are specifically made for the S38, ensuring they'll fit and function correctly within your engine's cylinder head.

What sets these valves apart is the black nitriding treatment. This process hardens the surface of the valve, making it more resistant to wear and heat. This is especially important for exhaust valves, which operate under high temperatures and are exposed to combustion gases. The result is a more durable valve that can handle the demands of your S38 engine, whether it's a daily driver or a track-focused build. This set includes all 12 exhaust valves you'll need for a complete engine rebuild.