All MK1/ MK2 Minis including all Cooper and "S" versions plus MK3"S" only.
This valve was fitted to every MK1/2 car including Cooper and "S" and the MK3 Cooper "S" only.
All other MK3 versions 850/998/1100 use
21A2031 which has a shorter spring with different lower poundage (approx 10lbs at 0.98" fitted length).
Now in original gold colour. Only difference between valves
21A1774 and
21A2031 is the spring. This uses
27H6620 spring