This is a "BILLET ALUMINUM THROTTLE BODY VACUUM BLOCK OFF PLATE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This item replaces the stock plastic piece and is used for those who are running the vacuum ports in another location (such as tapping into the back of the intake manifold or a throttle body spacer). Our Vacuum block plate comes complete with the plate, 2 bolts, and a gasket. This item is made in the U.S.A. and has a billet machine finish to it.
***Throttle body or plenum not included.