Smog pump PULLEY: 72-85 GM 5.9" V belt probably easier to recognize by

probably easier to recognize by the depth of the outside collar of the cap

This is a specific thermostat for the years mentioned ONLY

because of certain type of consumer practices

Choose if need the bracket kit

59-60 El Camino

Smog pump PULLEY: 72-85 GM 5.9" V belt probably easier to recognize byBrand New 3 bolt air or smog pump pulley for the GM vehicles from 72 85.. when many went to serpentine belts. Note .. on RHD cars.. (in Australia).. these were often swapped for something smaller if in the way of the RH Mounted Steering box but otherwise. . at 5. 9 inches.. this is it. Stamping AD, BDC, FAB, MU Make sure to test your Air Pump Check Valve for proper operation. A defective check valve will allow harmful exhaust gases to enter and