1985-1986, 1988-1989 GMC C2500 4.3L V6. 1981-1986, 1988-1989 GMC C2500 5.0L V8. 1981 GMC C2500 5.7L V8 VIN: L. 1981 GMC C2500 5.7L V8 VIN: M. 1979-1980, 1982-1986, 1988-1989 GMC C2500 5.7L V8. Notes: Engine Water Pump Gasket -- Water Pump to Block; Composite.
