Part Type: Carburetor Float. Brass Float. 1972 GMC Jimmy Engine: 5.7L V8; Primary; Carb MFG: R-4; Carb Model: 4MV;. 1973 GMC Jimmy Engine: 5.7L V8; Primary; Carb MFG: R-4; Carb Model: 4MV;. 1973 GMC Jimmy Engine: 7.4L V8; Primary; Carb MFG: R-4; Carb Model: 4MV;.
