Supertech Toyota Supra (A90) / BMW B58B Sodium Filled Inconel Exhaust Valve - Set of 12

When you're rebuilding the top end of your Toyota Supra (A90) or BMW with a B58B engine, you want parts that can handle the heat and stress. This set includes 12 Supertech sodium-filled Inconel exhaust valves, specifically made for these high-performance engines. These aren't your everyday valves; they're built to withstand the extreme temperatures and pressures found in demanding engine builds.

The key to these valves is the Inconel material and the sodium filling. Inconel is a superalloy known for its exceptional strength and resistance to high temperatures and corrosion, making it ideal for exhaust valves that glow red hot under load. The sodium core inside the valve stem acts as a heat exchanger. As the valve heats up, the sodium melts and circulates, transferring heat from the valve head down to the cooler valve stem and into the cylinder head. This active cooling helps keep the valve temperatures lower, which can improve valve longevity and engine performance under sustained high loads. This set gives you all 12 valves needed for a complete engine rebuild.

If you're pushing your B58 or A90 Supra engine hard, whether for track use or serious street performance, these valves are a solid choice to ensure reliability and consistent performance. They are designed to be a direct replacement for your stock valves, simplifying the installation process for your engine builder.