Improved oil pump valve for Harley Davidson

Fits all 1936-1955 OHV Big Twins and all 1966-1980 Big Twins

• HD.M.G.I. has devised the solution to the problem of oil accumulation in the crankcase in engines prior to the year 2000. 
  
• The steel ball does not always seal the oil pump's feed hole, which causes the oil tank to empty into the crankcase when the engine has been stopped for some time. 
  
• The solution is a special ball made of FKM 70 ±5 Shore (Viton) material, which withstands oil and temperatures from -25 to +230 degrees Celsius. 
  
• The complete kit includes the ball, a special spring, and an aluminum adapter that is placed between the spring and the ball.