1978 GMC K15 Suburban 4.1L 6 Cyl. 1977-1978 GMC K15 Suburban 5.0L V8. 1975-1978 GMC K15 Suburban 6.6L V8. 1975-1977 GMC K15 Suburban 5.7L V8. Notes: Engine Cooling Fan Clutch -- Thermal; Heavy Duty. Ensure Proper FitTo confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table.
