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Sierra 18-7865 Fuel Water Separating Filter 10 Micron for Yamaha Outboards

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

118-7865
06/03/2036 6:32 AM
Sale Price

$10.00

In Stock (10+)

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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 18-7865 is a high-performance fuel water separating filter designed for Yamaha 2-stroke and 4-stroke outboard engines up to 115 HP. This compact filter element features 10-micron filtration that effectively removes contaminants and separates water from fuel to protect your engine and ensure optimal performance.

Key Features:

  • 10-micron filtration rating - over 90% efficient at removing particles as small as 10 microns
  • Advanced water separation - removes over 98.8% of emulsified water from gasoline
  • High flow capacity - flows at 90 GPH to support high-demand engines
  • Optimized for ethanol-blended fuels that absorb more water and particulates
  • Compact design for easy installation with Sierra 18-7774 bracket
  • Marine-grade construction for durability and corrosion resistance

Modern ethanol-blended fuels absorb more water and loosen more particulates than traditional gasoline, making proper filtration essential for engine protection. The Sierra 18-7865 delivers efficient filtration without restricting fuel flow, ensuring clean fuel delivery even to the most demanding marine engines. This filter replaces Yamaha OEM part numbers MAR-MINIF-IL-TR and MAR-MIOAS-00-00, and is interchangeable with Mallory 9-37808.

Great price, fast shipping, they have stock levels updated in their website.

Good. So far.

Great. Just need better hours for customer service representative

Good

Awesome price on a Yokohama tire for my Lotus. Delivered a day later than expected, but overall a good experience.

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Great experience overall.

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