OMC GM Small Block Exhaust Manifold | Sierra 18-1903 Control Cable Accessories you can complete your maintenance

you can complete your maintenance project in a single afternoon without trips to the store

Founded in 1962 in Boca Raton

Produced to meet Mercury Marine original equipment manufacturer specifications to best protect your MerCruiser Alpha One Gen II Stern Drive and engine

Replaces Crusader 98460 and R019008T

450 amp DC 30 second cranking rating

OMC GM Small Block Exhaust Manifold | Sierra 18-1903 Control Cable Accessories you can complete your maintenancePort 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