Intake Valve2961Caracteristicas: One piece stainless steel, stellite tipped valves impregnated by a special nitrided process with . 002" depth and . 0002" surface buildup to improve wear properties and reduce friction This process provides resistance to corrosion; wears superior to hard chromium and electrolysis nickel plating Lightweight with profiles that provide excellent flow characteristics Compatible with leaded and unleaded fuels and can be run in cast iron