Brand-new ACDelco fuel tank lock ring gasket for all 1984-1987 Buick Grand National, Turbo Regal, and 1987 GNX.

This is the ACDelco metal-reinforced large o-ring gasket with locating tabs that seals the fuel sending unit to the fuel tank.  This updated gasket eliminates the worry of slipping out of position that is a common problem with plain, non-reinforced O-ring gaskets.

This part is purchased in bulk and will ship re-bagged.