This is the emission air valve for many different GM vehicles from 1984-1985. This is a brand new, factory OEM, genuine GM part, manufactured by ACDelco, still in the original box. The box is in really rough shape. This is for 2.5L 4 cylinder engines. This has 4 tubes.

GM part # 22050646

Alternate GM part #'s 22009038

Item is number 8 in the GM diagram.