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Sierra 18-1876 Marine Exhaust Elbow Riser for OMC Stern Drive Engines

Manufacturer

Sierra

<p>For nearly six decades, Sierra has established itself as one of the marine industry's most trusted names in aftermarket engine and drive parts. Founded as a specialized marine parts manufacturer, Sierra has grown into a comprehensive supplier of replacement components, instrumentation, and accessories for both recreational and commercial boating applications. Operating from their 300,000-square-foot distribution center in Litchfield, Illinois, Sierra serves boat owners and marine technicians worldwide with an extensive catalog of parts engineered specifically for the harsh saltwater environment.</p><h3>Marine Engine Excellence</h3><p>Sierra's reputation was built on delivering precision-engineered internal engine components and drive system parts that meet or exceed OEM specifications. Their <a href="/7570-sierra-engine-gasket-set-5404">engine gasket sets</a> provide critical sealing solutions for inboard and outboard motors, while their <a href="/7570-sierra-engine-complete-assembly-15341">engine complete assemblies</a> offer comprehensive replacement options for major overhauls. Each component undergoes rigorous testing to ensure reliability in demanding marine conditions, from corrosion resistance to temperature cycling performance.</p><h3>Instrumentation and Monitoring Systems</h3><p>Accurate instrumentation is essential for boat operators to monitor engine health and prevent costly breakdowns on the water. Sierra's comprehensive line of <a href="/7570-sierra-gauges-200483">gauges</a> includes everything from fuel pressure and temperature indicators to voltmeters and trim gauges, all designed with marine-grade materials that withstand vibration, moisture, and UV exposure. Their <a href="/7570-sierra-tachometer-gauge-1488">tachometer gauges</a> deliver precise RPM readings critical for optimizing engine performance and fuel efficiency. Supporting these instruments, Sierra's <a href="/7570-sierra-gauge-resistor-47908">gauge resistors</a> ensure proper signal conditioning and accurate readings across various sensor types and engine configurations.</p><h3>Expanded Product Portfolio</h3><p>In 2022, Sierra significantly broadened its scope beyond traditional marine engine parts to encompass a wider range of boating accessories and even outdoor power equipment components. This strategic expansion brought established marine brands like Shields and Moeller under the Sierra umbrella, creating a one-stop resource for marine maintenance and replacement parts. The company now offers fuel systems, electrical components, battery charging solutions, and NMEA electronics alongside their traditional engine parts lineup.</p><h3>Quality Backed by Industry-Leading Warranties</h3><p>What sets Sierra apart in the crowded aftermarket marine parts market is their commitment to standing behind every component they manufacture. Their warranty coverage extends beyond simple part replacement—it includes shop labor, haul-out fees, towing charges, and related incidental costs should a warrantied part fail. This comprehensive protection reflects the company's confidence in their manufacturing processes and quality control standards. For boat owners facing repairs far from shore or mechanics working on customer vessels, this peace of mind is invaluable. Whether you're maintaining an outboard motor, rebuilding an inboard engine, or upgrading your boat's instrumentation, Sierra's decades of marine industry experience and commitment to quality make them a reliable choice for keeping your vessel running at peak performance.</p>

Part Number

18-1876
08/07/2036 6:34 PM
Sale Price

$84.56

1 left at this price

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Usually delivered within 2 days

free shipping

FREE SHIPPING

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-1876 is a cast iron marine exhaust elbow riser engineered as a direct OEM replacement for OMC stern drive engines. Designed to meet or exceed original equipment specifications, this riser is built to withstand the demanding conditions of the marine environment and delivers reliable, long-lasting performance.

Sierra manifolds and risers are painted, packaged, and leak-tested before leaving the factory, ensuring a quality-assured component that installs correctly right out of the box. The black-painted cast iron body resists corrosion and stands up to the heat and moisture exposure common in marine exhaust systems.

Key Features:

  • Cast iron construction for maximum durability and longevity
  • Black painted finish for corrosion resistance
  • Factory painted, packaged, and leak-tested for quality assurance
  • Designed for use with 3-1/2" I.D. exhaust hose
  • Compatible with Sierra 18-1904 Manifold
  • Use with Sierra 18-2850 Manifold End Cap Gasket
  • Engineered to meet or exceed OEM specifications

Backed by Sierra's decades of marine parts expertise, the 18-1876 riser is a trusted replacement for OMC stern drive applications, helping keep your exhaust system sealed, safe, and performing at its best.

Great company to do business with. Excellent prices and fair shipping rates. I will certainly buy from them in the future.

Excellent experience A+

Great price and fast shipping, beat auto anything by a mile.

Satisfactory

Very easy to use.

Lowest prices around and ausome customer service will deal with you guys in the future!!

Definitely the lowest price! Quick shipping, and great communication and follow-through.

thnks

Quick and easy checkout THANKS

So far so good

The ordering was very easy and shipped quickly but sadly I made a big mistake as I ordered the wrong part. I would like to return the part if possible. Thank you.

I have had a very good experience with Autoplicity and will look for more parts here. I called Customer Service and they were very good and accurate with me. It was easy, they were very nice, immediate response, and great price.

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