For 1987 GMC R1500 Radiator Cap 63336BW Radiator Cap -- Pressure Rating 16 psi

1.1 Bar Thermostatic Radiator Cap 13 PSI Pressure Rating with Temperature Gauge

1.3 Bar Thermostatic Radiator Cap 13 PSI Pressure Rating with Temperature Gauge

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

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

1.1 Bar Thermostatic Radiator Cap 13 PSI Pressure Rating with Temperature Gauge

1.1 Bar Thermostatic Radiator Cap 13 PSI with Pressure Rating Temperature Gauge

For 1987 GMC V1500 Radiator Cap 22416MP Radiator Cap -- Pressure Rating 16 psi