For 1987 GMC R1500 Radiator Cap 15919DZDR Safety Lever -- Relief pressure 16 lb

For 1958 GMC PM151 Radiator Cap 34783XMRR Safety Lever -- Relief pressure 7 lb

For 1987 GMC R1500 Radiator Cap 35768RTGM Standard -- Relief pressure 16 lb

For 1955 GMC PM250 Radiator Cap 55621DNBJ Safety Lever -- Relief pressure 4 lb

For 1987 GMC R1500 Radiator Cap 54577YNRJ Standard -- Relief pressure 16 lb

For 1978 GMC C15 Radiator Cap 57133CV Safety Lever -- Relief pressure 16 lb

For 1987 GMC V1500 Radiator Cap 21552HBPW Safety Lever -- Relief pressure 16 lb

For 1987 GMC V2500 Radiator Cap 32541SJNM Safety Lever -- Relief pressure 16 lb