Parts Geek - For 1975, 1977-1978 GMC K25 Carburetor Float Walker 42889GYGG. 1977-1978 GMC K25 5.0L V8. 1975 GMC K25 5.7L V8. Notes: Carburetor Float -- Primary; Refer to OEM interchange carburetor number to verify all components; Carb MFG: R-2; Carb MFG: 2GC.
