Sierra 18-1909-1 marine exhaust riser for Volvo Penta and OMC marine gas engines. Has a 4" outlet (measure on the inside diameter of the hose). Fits many 1989 to 1998 OMC and 1994 to date Volvo Penta. Compare part numbers below for accurate fitment. This riser comes with a new gasket and plugs. Accepts all original factory accessories and fittings. Each purchase is for one riser.

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

This part is new and high-quality cast iron construction. To determine if this is the correct replacement for you, look on your current part for casting numbers and match them to the cross reference below:

Cross Reference	Part Number
Volvo Penta	3855270-9
OMC	913784, 3855270, 3850456
Osco Motors	50456, 5045A
Barr Marine	OMC-20-913784
Sierra Marine	18-1909-1
Aqua Power	5711
GLM Products	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.

Share this product:
PinterestTwitterFacebook