This is a replacement transmission mount which is used to attach the transmission tail shaft to the crossmember and eliminate vibration. This original style mount differs cosmetically from the originals but will fit correctly.Camaro Applica tions: 1980 302ci AT or MTFirebird Applications:1977-79 350ci AT/MT1977-79 403ci AT/MT1977-81 301ci 4.9L AT or MT1977-83 305ci 5.0L AT1980-81 265ci 4.3L AT or MT 1981 267ci 4.4L AT or MT1987 350ci 5