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Sierra 18-1976-2 Exhaust Manifold Elbow for MerCruiser V6 V8

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

118-1976-2
06/02/2036 11:20 PM
Sale Price

$158.06

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Sierra 18-1976-2 is a direct replacement exhaust manifold elbow designed for MerCruiser MCM/MIE GM V-6 and V-8 marine engines with center rise outlet exhaust manifolds from 1983 to 2002. This critical component features a water induction system that prevents water from entering the engine, making it essential for proper marine engine operation.

Key Features:

  • 4-inch hose connection with 7-degree down angle for optimal exhaust flow
  • Fits both port and starboard installations
  • Compatible with Sierra manifolds 18-1952-1, 18-1953-1, and 18-1957-1
  • Includes all necessary pipe plugs for complete installation
  • Designed for MerCruiser V-6, V-8, and Big Block applications where 4-inch outlet riser is required
  • Recommended for saltwater applications with corrosion-resistant construction

Replaces OEM Part Numbers: Mercury Marine 44354A3, 44354A9, 44354A10, 44354A13, 807914A1, 807988A2, 807988A03 | Barr MC-20-44354 | GLM 51140 | Osco 4354 | Aqua Power 5706 | Mallory 9-40559

Exhaust manifold elbows are targets for corrosion in the harsh marine environment and should be inspected regularly and replaced as needed to maintain engine performance and prevent water intrusion.

Easy to order on line.I received help from them and was helpfull.

Very smooth transaction, good email communication, order arrived as expected

Easy and reasonably priced

Easy to order, showed up fast, the few questions I had were answered quickly.

Excellent job

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