Supertech Mitsubishi 4G63/4G63T Black Nitrided Exhaust Valve - +0.5mm Oversize - Single (D/S Only)

If you're rebuilding the top end of your Mitsubishi 4G63 or 4G63T engine, especially if you're looking to get the most out of your cylinder head, new exhaust valves are a critical component. This Supertech exhaust valve is designed specifically for these popular engines, offering a direct replacement that's ready for performance builds.

This valve features a black nitrided surface treatment. This process hardens the surface, making it more resistant to wear and reducing friction as it moves within the valve guide. It's also a +0.5mm oversize valve, which is useful when you're dealing with worn valve seats or want to maximize flow potential by slightly increasing the valve diameter. This specific valve is for the exhaust side only and is sold individually, so you can replace exactly what you need.