Exhaust Manifold Elbow Riser - 18-1909-1 - Sierra
Price: $192.33
Save: $77.66
(28% Off $269.99)
Part # 18-1909-1
2nd Day Air for $2.99 More Eligible
SHIPS TODAY!* if ordered in 5 hrs 28 mins.
No Reviews
This item is found in the following Product Families
OMC Riser, 4" outlet 7 degrees. Fits many GM & Ford center rise manifolds
Use with:
  • Manifold: 18-1986
  • Riser Gasket: 18-0943
  • Mounting Kit: 18-8507

Replaces OEM part #
  • OMC 913784
  • OMC 3857944
  • OMC 3855270
  • OMC 3850456
  • VOLVO 3857944-7
  • VOLVO 3855270-9
  • VOLVO 3850456
I have a 5.7GSPLKD the riser gaskets are bad and I would like to replace them. I would also like to replace the exhaust flapper and bushings. Volvo no longer sells them- Obsolete. Would also like 2 fuel and 2 water seperator filters.?
For the gasket you need 18-4431-9 or OEM number 3863191. As for the flapper we do not offer it, OEM number is 3855517. As for the fuel/water separator filters, you need either part number 18-7989 or OEM number 3862228.

Do you drill out hole in riser to install temperature sensor on Sierra 18-1909-1?
There is port already in it.

Do you have a Exhaust-Manifold-Elbow for a Volvo penta 7.5 GL??
Unfortunately we will need to know the full model number to your engine to match up elbow. We do not list a 7.5GL, but we have different 7.4GL models. Please confirm.

Ask a question
Question & Answer Guidelines
This product ships in 1 business day.
Add to Cart and enter your Postal Code to determine the shipping charges.
Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
Standard Shipping Policies
Do you need Professional Installation? has teamed with a national network of independent installers that are ready to handle your installation needs.
Find your local Amtech dealer: