1987 HEATER MODULE GROUP DESCRIPTION QTY 1 2 3 4 5 8 845 VALVE SEAL SHUT OFF 1 3039425 3039425 8 858 VALVE SEAL TEMP 1 3033514 9 786 VALVE 0l SEAL VENT RH 1 3042884 3042884 L 8 858 VALVEJI SEAL VENT CTR 1 3035511 3035511 9 262 WASHER 187 FELT 5 DIA BY 25 TH 1 3020192 8 855 WIRE GRD 1 12016624 12016524 i 1991 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 17W 8 845 8 36 6 91