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Sierra 18-7866 High Capacity Fuel Water Separator Filter 10 Micron

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

118-7866
06/03/2036 5:54 AM
Sale Price

$14.65

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 18-7866 is a high-capacity fuel water separator filter designed to remove over 99.8% of emulsified water from gasoline while filtering harmful particulates. This 10-micron filter is engineered for high-performance fuel-injected marine engines, including inboards, sterndrives, and 2-stroke and 4-stroke outboards.

Key Features:

  • Over 90% efficient at removing particles as small as 10 micron
  • 90 GPH flow rate to feed even the hungriest motor
  • Independently tested to JIS, SAE J1839/J905 and ISO 4548-12 standards
  • High capacity 6-inch (152.4mm) filter size
  • Thread pitch: 11/16-16
  • Approved for use with Yamaha HPDI engines
  • Epoxy coated steel canister prevents corrosion

Ethanol-blended fuel absorbs more water and loosens more particulates than regular fuel, making proper filtration critical for protecting sensitive fuel injection systems. Pressure and leak tested to ABYC and USCG standards. Replaces Yamaha MAR-10MEL-00-00 and MAR-FUELF-IL-TR, Mallory 9-37807, and Mercury Marine 35-8M0154754.

Part was in excellent condition, brand new with current FIA approval. Shipped quickly with no issues.

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thank you

So Far So Good. i will continue to check you guys out.

hard to find part you had in stock with a good price, free shipping is the best

Excellent

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