1985-1989 GMC G1500 4.3L V6. 1980-1989 GMC G1500 5.0L V8. 1979-1989 GMC G1500 5.7L V8. Notes: Engine Water Pump Gasket -- Water Pump to Block; Composite. Ensure Proper FitTo confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table.