These exhaust manifolds are exact replicas of the original 1970-1972 Oldsmobile 455 W and Z manifolds. They bolt right up to the motor with no issues. They can be bolted up with no gaskets just like the factory did. They are highly detailed for show quality restorations.
Left hand driver side manifold, W, is stamped with the part number 402295 and right hand passenger side, Z, is stamped 402294. These manifolds will also fit onto any big block 400, 425 and 455 A body cars from 1965 to 1972.
Part #: EXHM702LHHR