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These Supertech black nitrided exhaust valves are crafted as +1mm oversize replacements for Nissan VK56DE engines and are sold as a set of 16. The nitrided finish is specified in the description and the oversize dimension supports engine builds requiring corrected valve sizing for the VK56DE application, making them suitable when upgrading or rebuilding that specific engine family.
Supertech Nissan VK56DE Black Nitrided Exhaust Valve- +1mm Oversize - Set of 16
