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Sierra 18-1970-2 Exhaust Elbow 3" for Mercruiser V6 V8 Stern Drive

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

18-1970-2
06/02/2036 4:18 AM
Sale Price

$249.59

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-1970-2 is a premium 3-inch exhaust elbow designed for Mercruiser stern drive applications. This critical exhaust system component features a 15-degree angle and is engineered to fit V6 and V8 marine engines with 3-inch O.D. risers.

Key Features:

  • Direct replacement for Mercruiser OEM part numbers 98504A3, 98503A2, and 95755A2
  • Also replaces Marine Power 0992-115 and Barr MC-20-98504
  • Fits GM V6 (229-262 CID) and V8 Small Block (305-350-377 CID) applications
  • Compatible with GM V8 Big Block (454-502 CID) engines (1981 and newer)
  • Includes restrictor gasket (18-0897) and brass plugs for complete installation
  • Factory painted, packaged, and leak tested for reliable performance

This exhaust elbow is designed to work with Sierra manifolds 18-1952-1, 18-1953-2, and 18-1957-2. Compatible with elbow gaskets 18-0897 (restrictor), 18-2849-1 (open), or 18-0672 (blocked). Use mounting kit 18-8529 for proper installation.

Products specifications

Replaces

Mercruiser 98504A3 and Marine Power

Fast and easy with great selection

order process was easy the return process sucks from a prior order chargeing a restocking fee....

Easy ordering, best price.

Fast &amp; Easy

great deal

Great

easy site to navigate, very good prices. Recried on time In 3 business days, thank you!

great chair for pool table area or any man cave

have to go back and look but i thought it was free shipping

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