This is a brand new set of 2 standard size black nitride intake valves for Harley big twin shovelhead motors from 1966 through 1984.  Fits all Harley models that use HD part #s 18074-66 or 18075-80.  These valves are marked with the later 18075-80 part number because they are the later style nitrided valves rather than plain steel valves.

1980 is when Harley started requiring nitrited valves from their suppliers to handle the unleaded fuel that came on the market and that was causing galling problems on standard steel valves. Some of the models that use these valves are shown on the list below.  Consult your parts manual to confirm correct application.  If you have any other questions, just let us know.

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Tech note on black nitride valves - Black nitride is a hardening treatment that increases the surface hardness of the valve yet it keeps good ductility beneath the hard nitrided layer, unlike stainless valves which are more brittle throughout. A black nitride surface finish is also smoother than chromed valve stems resulting in less friction between the valve stem and the guide which reduces galling.  It also makes the valve last longer with lead-free fuels and fuels that contain alcohol.  The black nitrided layer is adhered to a valve's base material at a microscopic level, so it can not flake or brake off. The black nitride coating is applied to the whole valve while traditional chrome coating is only applied to the stem.

1979 - 1980
Harley-Davidson1200 Fat Bob - FXEF
1977 - 1979Harley-Davidson1200 Low Rider - FXS
1971 - 1978Harley-Davidson1200 Super Glide - FX
1973 - 1980Harley-Davidson1200 Super Glide - FXE
1978 - 1984Harley-Davidson80 Electra Glide - FLH
1981Harley-Davidson80 Electra Glide Heritage - FLH
1979 - 1981Harley-Davidson80 Fat Bob - FXEF
1979 - 1982Harley-Davidson80 Low Rider - FXS
1983 - 1984Harley-Davidson80 Low Rider - FXSB
1980 - 1982Harley-Davidson80 Sturgis - FXB
1979 - 1984Harley-Davidson80 Super Glide - FXE
1980 - 1984Harley-Davidson80 Wide Glide - FXWG
1983Harley-DavidsonDisc Glide - FXDG
1966 - 1980Harley-DavidsonElectra Glide - FL
1966 - 1984Harley-DavidsonElectra Glide - FLH
1977Harley-DavidsonElectra Glide - FLHS
1980 - 1981Harley-DavidsonElectra Glide - FLHS
1983Harley-DavidsonElectra Glide - FLHT
1977 - 1981Harley-DavidsonElectra Glide Classic - FLH 1200
1979 - 1984Harley-DavidsonElectra Glide Classic - FLH 80
1983Harley-DavidsonElectra Glide Classic - FLHTC
1984Harley-DavidsonElectra Glide Special - FLHX
1982 - 1984Harley-DavidsonElectra Glide Sport - FLHS
1983Harley-DavidsonSport Glide - FXRT
1982 - 1983Harley-DavidsonSuper Glide II - FXR
1982 - 1983Harley-DavidsonSuper Glide II - FXRS
1980 - 1983Harley-DavidsonTour Glide - FLT
1980 - 1983Harley-DavidsonTour Glide Classic - FLTC