Supertech Mitsubishi 4G63/4G63T Sodium Filled Inconel Exhaust Valve - +1mm OS - Single (D/S Only)

This is a single, +1mm oversize exhaust valve from Supertech, specifically made for Mitsubishi 4G63 and 4G63T engines. These valves are constructed from Inconel, a material known for its exceptional heat and corrosion resistance, making them a solid choice for high-performance applications where exhaust temperatures can get extreme. The sodium-filled core helps to dissipate heat away from the valve face and stem, further improving durability under demanding conditions.

Using Inconel means you're getting a valve that can handle the intense heat found in turbocharged or heavily modified 4G63 engines. The sodium core acts like a heat exchanger, transferring heat from the valve head to the cooler stem area, which helps prevent valve seat recession and extends the life of the valve. This particular valve is a +1mm oversize option, which can be beneficial for rebuilding or performance-oriented engine builds where you might be looking to improve flow or compensate for worn valve seats.