Mercruiser 4 cylinder exhaust manifold . Replaces part # 96705A1 & Sierra 18-1955-1.
Application includes: up to 1983 2.5 & 3.0 Mercruiser No. 1, 140 hp models using a Rochester Carburetor w/mechanical choke
Carburetor bolt pattern dimension - 3-1/4" x 1-7/8"
Includes mounting gaskets and bolts