Supertech Nissan VK56DE Black Nitrided Exhaust Valve- +1mm Oversize - Set of 16

Black nitriding is a surface hardening process that adds a layer of hardness to the valve face, making these Supertech exhaust valves for your Nissan VK56DE engine more resistant to wear and heat. This set includes 16 valves, each measuring 1mm oversize, which is a common choice when rebuilding or modifying an engine to ensure a good seal and optimal performance, especially if the valve seats have been reconditioned or replaced.

Supertech is known for making well-built internal engine components, and these valves are no exception. The nitriding process not only improves durability but also helps to reduce friction, contributing to smoother operation. The +1mm oversize dimension is crucial for achieving a proper fit and seal in the cylinder head, particularly if the original valve guides or seats have seen significant mileage or have been machined.

When you're working on the top end of your VK56DE, whether it's a standard rebuild or a performance build, using quality valves like these ensures that your engine's breathing system is up to the task. They are designed to handle the demands of the engine while maintaining their integrity over time.