This is an NOS military surplus valve. This is the late style exhaust valve for the 134F engines. This is the style used with the roto-caps. This is a very high quality exhaust valve and is Stellite faced to work with the new fuels. Please look closely at the base of the valve because there is a big difference between the old style and new style exhaust valves and they way they are held in place.
Part Numbers: 8329517, 807342, 928342