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Sierra 18-15104 Marine Serpentine Belt for MerCruiser 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

18-15104
08/05/2036 3:43 PM
Sale Price

$103.64

3 left at this price

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Usually delivered within 2 days

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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 18-15104 is a high-quality replacement serpentine belt engineered for marine inboard and sterndrive engine applications. Designed as a direct OEM-equivalent replacement, this belt delivers reliable power transfer to critical engine accessories including the alternator, power steering pump, and raw water pump.

Sierra International is a trusted manufacturer of marine engine components, and this serpentine belt is built to meet or exceed original equipment specifications for fit, function, and durability in demanding marine environments.

Key Features:

  • Direct OEM-equivalent replacement serpentine belt
  • Engineered for marine inboard and sterndrive engine applications
  • Provides reliable power transfer to alternator, power steering, and water pump
  • Constructed to withstand the heat and moisture of marine operating conditions
  • Designed for straightforward installation with no modifications required
  • Meets or exceeds original equipment manufacturer specifications

The Sierra 18-15104 serpentine belt is an ideal maintenance or emergency replacement part for boaters looking to keep their engine accessories running at peak performance. Always cross-reference your engine's service manual to confirm fitment before installation.

great

Lack of detail requires independent verification of part number

Great Price very speedy shipping will buy again

shipping wouldn't calculate properly when updating products and quantities

fast

So far so good! :)

Excellent

Product was exactly as described. Rob@Autoplicity was great when I had an issue with packages being stolen from my porch and got it delivered to a secure site. Great company and will order from again when I need parts for my Acura.<br><br>Disclaimer: 5 star rating seems cliche but this was exactly what I hope for in online purchase experiences.

Autoplicity has an abundance of name brand parts at unbeatable prices. Customer service was also great to deal with. Receipt and tracking info was provided promptly.

Was going to also order TCI-618008 with this purchase but the free shipping didn't apply? Just thought you could add it to the same free shipping box.

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