This is a pair of factory replacement GM Chevy 4 bolt clam shell mounts.These also work when swapping into other GM products- Buick, Caddilac, Oldsmobile, and Pontiac.

* Also used on our LS and LT conversion cross member for the 1967-72 Chevrolet and GMC 4X4 trucks. Factory mounts from a 1973-87 4X4 Chevrolet truck.