USED AS AN ENGINE OIL PUMP PRESSURE REGULATING SPRING. Fits : ** Allis Chalmers ** - 60 Combine , 60A Combine , 60H Combine , 66 Combine , B , B116 Power Unit , B125 Power Unit , B15 Power Unit , C , CA , D15 , D272 , G160 Power Unit , H3 , Industrial 500 , Industrial 510 , Industrial 512 , Indust..