For 1978 GMC P35 Radiator Cap 93139GHTS Standard -- Relief pressure 16 lb

For 1978 GMC P35 Radiator Cap 59423BTCD Standard -- Relief pressure 16 lb

API 85MY39Z Radiator Cap Fits 1977-1978 GMC P35 Radiator Cap -- Standard; 16 lb

For 1978 GMC P35 Radiator Cap 95872QQNT Safety Lever -- Relief pressure 16 lb

For 1978 GMC P35 Radiator Cap 23739KTXM Safety Lever -- Relief pressure 16 lb

For 1983 Mercury Zephyr Radiator Cap API 33378DH Radiator Cap -- Standard; 16 lb

For 1977-1978 GMC G25 Radiator Cap API 33323DJ Radiator Cap -- Standard; 16 lb

Radiator Cap For 1977-1978 GMC P35 KS792NG Radiator Cap -- Standard; 16 lb