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Sierra 18-9500-3 TC-W3 Premium Blend 2-Cycle Outboard Marine Engine Oil 1 Gallon

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

118-9500-3
06/01/2036 6:11 PM
Sale Price

$31.56

In Stock (10+)

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Usually delivered within 2 days

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Fitment guaranteed

Fitment guaranteed

Product Details

Sierra's Premium Blend TC-W3 2-cycle engine oil is formulated to improve performance and extend engine life, making it ideal for today's high horsepower outboards that demand maximum performance. This high-performance lubricant reduces ring sticking, deposit formation, and exhaust port blockage, allowing for easier starting and resulting in significantly reduced aquatic toxicity compared to other outboard oils on the market.

Key Features:

  • TC-W3 certified premium 2-stroke marine engine oil specifically formulated for engine protection in demanding marine conditions
  • Compatible with carbureted, EFI, and direct injection (DFI) engines including Mercury Optimax, Yamaha HPDI, and Johnson/Evinrude Ficht and DI motors
  • Excellent for oil injection systems or pre-mix applications with superior performance even with lower quality fuels
  • Exceeds JASO, ISO, API, and NMMA specifications for advanced generation 2-cycle lubricants
  • Will not void engine manufacturer's warranty

This premium blend oil replaces Mercury part numbers 92-858027K01 and 858022Q01. One gallon bottle provides reliable protection for your marine engine while meeting all domestic and import outboard engine requirements.

Found what I was looking for.

Very easy processing

Fair price and quick delivery.

Easy and efficient

I received my product in good condition

easy to use

Best price right now on Bosch filters. Wish it was free shipping

Very simple and clear instructions.

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