RADIATOR CAPS Cont d DESCRIPTION PART NO DESCRIPTION PART NO CHEV GMC TRUCK Light Duty 1958 64 CHEV GMC TRUCK Heavy Duty 1958 64 Cont d 1958 62 All 850795 1958 59 80 980 100 9100410049100 850994 1963 64 P models w 4 cyl 850800 1960 50 thru 960 w std rad 850795 1963 64 P models w 6 cyl 850795 1960 50 thru 960 w hd rad 850994 1963 64 AIl exc P models 850800 1960 70 970 80 980 850994 1964 All G10 G910 850800 1961 63 50 thru 960 exc 348 V 8 850795 CHEV G M C TRUCK Heavy Duty 1958 64 1961 63 AI I w 348 409 V 8 850994 1964 All exc T60 T960 w 292 1958 59 50 60 960 ST 850795 6 cyl or 327 V 8 850994 1964 T60 T960 w 292 6 cyl or 1958 59 50 60 960 PT 850994 327 V 8 850795 FOR PROTECTION UNDER PRESSURE USE cN Radia 4 A small inexpensive part but a mighty important one Over 50 k of customers complaints on over heating are traced to lost I pressure in the tooling sys tem due to defective or worn pressure caps THAT is why it pays to check Pressure Caps Always replace and with a GM Original equipment Pressure Cap