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Sierra 18-15140 Timing Belt for Yamaha 4-Stroke 150HP Outboard

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

118-15140
06/24/2036 11:52 PM
Sale Price

$69.52

In Stock (6)

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Usually delivered within 2 days

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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 18-15140 is a premium replacement timing belt engineered specifically for Yamaha 4-stroke 150HP outboard motors (F150, LF150, F150A) from 2004 and newer. This high-quality aftermarket timing belt replaces Yamaha OEM part number 63P-46241-00-00, delivering reliable performance at a competitive price point.

Key Features:

  • Fiberglass tension member provides excellent flex characteristics and superior elongation behavior for consistent performance
  • Chemical and contaminant-resistant construction ensures long service life in harsh marine environments
  • Positive slip-proof engagement maintains precise timing under all operating conditions
  • Meets or exceeds OEM belt specifications for guaranteed fitment and performance
  • Backed by Sierra's quality assurance and meets original equipment standards

Sierra Marine is recognized as a market leader in aftermarket marine engine parts, offering comprehensive product lines that cover every major engine brand. This timing belt is a critical engine component that should be inspected regularly and replaced according to manufacturer service intervals to prevent catastrophic engine failure. Professional installation is recommended to ensure proper timing alignment and tension.

Hard to find tire that was discontinued was available at THMotorSports. Happy to have it and overall good shopping experience.

Great!

The online site is fairly easy to use

Great

Took me forever to find this part and it actually be in stock! Thank you so much!!!! Great price!

easy and cheap

quick, easy and in stock

EASY TO NAVIGATE, FOUND EXACTLY WHAT I NEEDED!!

Quick and easy. Hopefully the shipping and arrival are the same.

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