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Sierra 18-79816 Ethanol Fuel Tester for Gasoline

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

18-79816
06/01/2036 3:03 PM
Sale Price

$10.34

In Stock (6)

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Product Details

The Sierra 18-79816 Ethanol Fuel Tester is an essential diagnostic tool for marine, RV, and powersports applications. This easy-to-use tester accurately measures the ethanol content in gasoline, helping you protect your engine from the damaging effects of high ethanol levels.

Key Features:

  • Clear graduated test tube with ethanol percentage markings for precise measurements
  • Easy-to-read measurement scale shows exact ethanol content
  • Simple water-displacement testing method delivers results in minutes
  • Helps prevent fuel-related problems including phase separation, corrosion, and carburetor damage
  • Compact and portable design for testing fuel at the pump or from storage tanks
  • Ideal for 2-stroke and 4-stroke marine engines, small engines, and high-performance applications

How It Works: Fill the tester to the water line with clean water, add your fuel sample to the gasoline line, shake for 30-60 seconds, and let settle for 5-10 minutes. The ethanol bonds with the water and settles to the bottom, where you can read the precise ethanol percentage on the graduated scale.

Ethanol-blended fuels can cause serious issues in marine engines, including hard starts, fuel system degradation, reduced power output, and phase separation. Regular testing helps ensure your engine runs on appropriate fuel and prevents costly repairs. Replaces Mercury part number 91-879172T28.

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Lowest price I could find online and they had great reviews! Highly recommended, will be back!

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