(SKU:5537) Black Nitride VALVE for 1937 - 1948 UL & ULH
Black Nitrated Nickle Steel VALVE
Suitable for INTAKE & EXHAUST
use in all 1937 - 1948 UL & ULH motors
What is Black Nitrate?
Black Nitrated Valves have been the standard in the industry for many years now.
The Black Nitrate coating is microhard - higher than the base nickle steel metal.
The Black Nitrite adheres to the base metal at a microscopic level, so it does not flake or break off.
The Black Nitrated surface finish of the valve stem is even smoother than with chromed stems - resulting in less friction between stem and guide