OEM USED 1986-1987 Buick Regal Grand National, T-Type Air Filter Housing.  This is an original GM part and it includes the housing to mass air flow sensor elbow (P/N 2026877).  The housing shows some wear, but it could be restored to look great.  The seal between the top and bottom halves of the housing is still in good shape.  Please examine the photos carefully, and contact me with any questions.  (1147)