1979 GMC G1500 6.6L V8. 1979-1986 GMC G1500 5.0L V8. 1979-1986 GMC G1500 5.7L V8. Contents: Contains Intake Manifold Gaskets, Intake Manifold End Seals, Distributer Mounting Gaskets, RTV. Notes: Manifold Gasket Set - Intake -- Contains one crossover restrictor; Composite.