Barr small block GM exhaust manifold. Part # CHV183 / CHV-1-83.Application includes Marine Power, Indmar, Crusader Champion series and many other inboard sbc 305 cid (5.0L) and 350 cid (5.7) engines.
Replaces GLM 56230 , Indmar 53-1027, Sierra 18-1997-1 and Marine Power 0994-000.