API 49GD16H Radiator Cap Fits 1975-1978 GMC C15 Radiator Cap -- Standard; 16 lb

API 31QC34P Radiator Cap Fits 1975-1978 GMC G15 Radiator Cap -- Standard; 16 lb

API 34BN88M Radiator Cap Fits 1987 GMC V1500 Radiator Cap -- Safety Lever; 16 lb

For 1975-1978 GMC K25 Radiator Cap API 97727DM 1976 1977

API 23TT59G Radiator Cap Fits 1977-1978 GMC K35 Radiator Cap -- Standard; 16 lb

API 76WS14Y Radiator Cap Fits 1977-1978 GMC G25 Radiator Cap -- Standard; 16 lb

API 63QX56P Radiator Cap Fits 1977-1978 GMC G35 Radiator Cap -- Standard; 16 lb

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