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Product Description
H-D #165-37
High Quality USA made ROWE Black Nitrated EXHAUST VALVE
Suitable for 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 stainless 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 guideProduct Tags
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