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Sierra 18-1909-1 Marine Exhaust Riser with 7° 4" Outlet for OMC Volvo Penta

Manufacturer

Picture for manufacturer Sierra

Part Number

118-1909-1
5 reviews
Sale Price

$242.37

In Stock (7)

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Usually delivered within 2 days

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Product Details

The Sierra 18-1909-1 is a premium marine exhaust riser designed for Volvo Penta and OMC marine gas engines with GM and Ford center rise manifolds. This high-quality cast iron riser features a 7-degree angle with a 4-inch outlet (measured on the inside diameter of the hose), making it ideal for replacing freeze-damaged or corroded exhaust risers on inboard marine engines.

Key Features:

  • High-quality cast iron construction for maximum durability in harsh marine environments
  • CNC machined mating surfaces provide the best possible seal without additional preparation
  • 7-degree angle with 4-inch outlet for proper exhaust flow
  • Primed and painted black finish for corrosion resistance
  • Includes gasket and plugs for complete installation
  • Riser mating bolt dimensions: 3-7/8" (98.4mm) by 2-19/32" (65.9mm) center-to-center
  • Leak tested for quality assurance before packaging
  • Ready to install right out of the box

Replaces OEM Part Numbers: OMC 913784, 3855270, 3850456, 3857944 | Volvo Penta 3855270-9, 3857944-7, 3863061 | Mallory 9-40911

Use With: Manifold 18-1986-1, Riser Gasket 18-0943-2, Mounting Kit 18-8507

Sierra has been producing premium marine engine parts for over 50 years, engineering products to meet or exceed OEM specifications. Each Sierra riser is an exact OEM match designed to fit right the first time and restore function to original specifications.

My customer service experience was very helpful, the product works great, and they got my expedited order shipped out quickly! Very satisfied.

Great Experience....

I had ordered some CM-19546-A2 (friction-modifier for posi-traction differentials with carbon-fiber clutches) from CJ Pony Parts, and it arrived broken and had all leaked out. I spent $25.42 for nothing, and they still have not responded to my complaint. I bought 2 bottles from THMotorsports in hopes that ONE would arrive undamaged. They arrived in a box, not a bubble mailer like CJ, and both bottles were intact and undamaged. If you're going to buy specialty automotive fluids online, THMotorsports is the better place to do so.

Great

I'm a 60 year old man refitting a 50 year old sailboat. I'm sure our paths will cross again.

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