SIERRA RISER 18-1909-1

Replaces: OMC 913784, 3855270, 3850456, Volvo 3855270-9, 3863061 OMC Riser, 4"" outlet 7°:Fits many GM & Ford center rise manifolds.
Use with:
Manifold: 18-1986-1
Riser Gasket: 18-0943-1 open
Mounting Kit: 18-8507 open