New Sierra marine exhaust gasket set. Includes two 18-2949 manifold gaskets and two 18-0943-1 riser gaskets. For use with most OMC and most 1994 to date Volvo Penta marine exhaust manifolds on GM/Chevrolet V8 small block engines. Does not work with 1993 and earlier Volvo Penta.

Riser gasket dimensions are 3-7/8" (98.4mm) by 2-19/32" (65.9mm) bolt center-to-center.

This gasket set is compatible with the following manifolds:

Brand	Part Number
OMC/Volvo Penta	912441 909280, 912442, 909279, 910144, 914035, 3852374, 3857723, 3852374-2, 3857579, 3847501
Osco Motors	2441, 2442, 57579
Barr Marine	OMC-1-912441, OMC-1-912442, OMC-1-914035
Sierra Marine	18-1902, 18-1903, 18-1986-1
HGE Marine	4035
Aqua Power	5511, 5513, 5516
GLM Products	51410, 51420, 51430

The riser gaskets are compatible with the following risers:

Brand	Part Number
OMC/Volvo Penta	909863, 909218, 982680, 3855270-9, 913784, 3855270, 3850456
Osco Motors	9863, 50456, 5045A
Barr Marine	OMC-20-982680, OMC-20-913784
Sierra Marine	18-1921, 18-1909-1
Aqua Power	5708, 5711
GLM Products	51320, 51330

About Sierra
Sierra provides premium-quality aftermarket replacements for over 6,000 marine parts, tools, and components. Sierra products are engineered to meet or exceed OEM standards, and stand up in harsh marine environments. Every new Sierra part comes with a limited lifetime warranty that covers the useful life of the product against any defects in workmanship and materials.

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