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OMC GM Small Block Exhaust Manifold | Sierra 18-1903

OMC GM Small Block Exhaust Manifold | Sierra 18-1903

Sierra

  • $362.01
    Unit price per 

Only 3 left!

Port exhaust manifold fits OMC GM 5.0L & 5.7L marine engines with end riser.

OMC GM Small Block Exhaust Manifold | Sierra 18-1903

  • OMC exhaust manifold
  • Direct replacement manifold fits OMC GM V8 305 and 350 cu. in. small block engines with end riser exhaust manifold
  • Port side
  • Heavy duty cast iron
  • Painted black
  • Includes both gaskets and drain cap with hose clamp
  • Manifold mounting kit P/N 18-8502 – sold separately
  • Replaces OMC 912442
  • Replaces Osco 2442

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