Fits 1970 - Later Harley Big Twin, Shovelhead, and Evolution Motors (Replaces the top end feed screen plug on the engine block.) Also available for 1936 - 1969 models Chrome plated to look good for years to come. Female threads for use with any 1/8" NPT Oil Pressure Gauge. Works with our Marshall and Accel Oil Pressure Gauges. ***GAUGE NOT INCLUDED*** Comes with an o-ring for a leak-free seal. MADE IN THE USA Works great with out Marshall or Accel Oil Pressure Gauges! Chrome plated to look good for years to come. Female threads for use with any 1/8" NPT Oil Pressure Gauge. Works with our Marshall and Accel Oil Pressure Gauges. Comes with an o-ring for a leak-free seal. Fits 1970 - Later Harley Big Twin, Shovelhead, and Evolution Motors (Replaces the top end feed screen plug on the engine block.) Also available for 1936 - 1969 models MADE IN THE USA ***GAUGE NOT INCLUDED*** Finish: Chrome Dimensions: Female Threads - 1/8" NPT Weight - 1.7 Ounce Fitment: Fits 1970 - Later Harley Big Twin, Shovelhead, and Evolution Motors (Replaces the top end feed screen plug on the engine block.)