Ford Small Block Exhaust Manifold - 302 & 351 | Barr Marine FM-1-83 Cast iron center rise exhaust manifold fits Ford 302 & 351 CID marine engines. Barr Ford center rise exhaust manifold Generic exhaust manifold for Ford 302 and 351 cu. in. marine engines Interchangable between port and starboard side Includes gaskets and manifold to head mounting hardware 3/4 in. NPT cooling hose connections Used on some Indmar engines as stock Heavy duty cast iron Painted black Riser mounting package P/N CM-20-0082P - sold separately Replaces Barr FM1-83 Replaces Indmar 53-2008 Replaces Osco FL994