This is a "Billet Rear Main Cap" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. These caps are the perfect upgrade to a stock Buick block (Especially 450HP and above) to prolong the life of your build.
***Rest assure, these Main caps are MADE IN USA. The caps are the same caps that have been around for many years. The manufacturer of these main caps has discontinued the power 6 logo engraving on them and has discontinued coating them black as most people are use to seeing from many years ago.
