GM Original Equipment SIT-J6-85 EXCEPT ENGINE OIL COOLING SYSTEM(KC4), HEAVY DUTY RADIATOR and TRANS OIL COOLER(V02), HEAVY DUTY COOLING(V05) Eng: LB4 8th VIN Digit: Z
1991 GMC G2500 equipped with 4.3L V6 Gas OHV
GM Original Equipment SIT-J6-85 EXCEPT ENGINE OIL COOLING SYSTEM(KC4), HEAVY DUTY RADIATOR and TRANS OIL COOLER(V02), HEAVY DUTY COOLING(V05) Eng: LB4 8th VIN Digit: Z