Mercruiser GM Small Block Exhaust Manifold | Sierra 18-1950-1
Port exhaust manifold fits Mercruiser GM 5.0L & 5.7L marine engines with end riser.
- Mercruiser log style exhaust manifold
- Direct replacement manifold fits Mercruiser GM V8 small block 305 and 350 cu. in. engines from 1977 to 1982 with end riser
- For Mercruiser 198, 228, 255, 260, and 898 model engines
- Port side
- Heavy duty cast iron
- Painted black
- Includes all gaskets, riser studs, and drain plugs
- Manifold mounting kit P/N 18-8548 – sold separately
- Replaces Mercruiser 77234A2, 77234A7
- Replaces Osco 7234B
- Replaces Sierra 18-1950
