OMC 4 Cylinder Adaptor Plate to Riser Gasket 

Adaptor plate (OMC-20-908014) to riser (OMC-20-910380) gasket.

Replaces Mallory 9-65100, Sierra 18-2875 and GLM 33770.

Fits these applications:

• OMC 4 cylinder 153 C.I.D. 120 H.P. 2.5 liter, Model 120 engine (log style direct replacement).
• OMC 4 cylinder 181 C.I.D. 140 H.P. 3.0 liter, Model 140 engine (log style direct replacement).
• OMC (Volvo) 4 cylinder 181 C.I.D. 140 H.P. 3.0 liter, all carbureted models with Vortec style head (log style direct replacement).

• The stainless steel restrictor plate is only used in some applications. If you are not sure if the plate is used, please consult your OEM. Two gaskets are required when using the plate (one on each side of the plate).

Compatible parts:

• OMC-1-3858850 direct replacement exhaust manifold.
• OMC-1-981462 direct replacement water cooled exhaust manifold.
• OMC-1-982657 direct replacement water cooled exhaust manifold. Manifold has the heat source in the exhaust port for automatic choke.
• OMC-1-984054 direct replacement exhaust manifold.
• OMC-20-3862603 direct repalcement exhaust manifold.
• OMC-20-908014 exhaust manifold to riser adaptor for use with OMC riser part #'s 980188 and 910380.
• OMC-20-910380 direct repalcement exhaust elbow.
• OMC-20-980536 direct replacement exhaust riser.

Manufactured by Barr Marine. Part number OMC47-908013.