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Sierra 18-0711 Float Chamber Gasket for Yamaha Outboard Engines

Manufacturer

Sierra

<h3>Sierra: Six Decades of Marine Aftermarket Excellence</h3><p><strong>Sierra</strong> has spent nearly 60 years earning its reputation as one of the most trusted names in the marine aftermarket industry. Originally focused on engine and drive components for boats, the brand has grown into a comprehensive source for nearly everything a boater needs to keep their vessel running at its best — from precision instrumentation to complete engine rebuild hardware.</p><p>Now operating as a brand of Dometic, Sierra manages global aftermarket distribution from a 300,000 sq. ft. facility in Litchfield, Illinois. The Sierra brand today encompasses not only its flagship marine parts line but also well-established marine names like Shields and Moeller, offering boaters a broader catalog than ever before. Whether you own an outboard, inboard, or sterndrive, Sierra's engineering team designs products to meet or exceed OEM specifications.</p><h3>Precision Instrumentation You Can Trust on the Water</h3><p>One of Sierra's most recognized product areas is its marine instrumentation lineup. The brand's <a href="/7570-sierra-gauge-set-1480">gauge sets</a> cover everything from classic analog instrument clusters to advanced digital multi-function displays. Sierra offers packages suited to outboards, sterndrives, and gasoline-powered inboards, with options ranging from coordinated analog kits in styles like Arctic, Eclipse, and Amega to modern touchscreen solutions like the R3 multi-function gauge. Features such as scratch-resistant domed glass lenses, silicone-dampened pointers, and perimeter backlighting make these instruments highly readable in all conditions.</p><p>Behind every accurate gauge reading is a properly calibrated sending circuit. Sierra's <a href="/7570-sierra-gauge-resistor-47908">gauge resistors</a> are a critical part of that chain, ensuring the signals from sensors and sending units are correctly interpreted by your instruments. These components are built to marine-grade standards to resist moisture, vibration, and corrosion — the realities of life on the water.</p><h3>Engine Internals Built to OEM Standards</h3><p>Sierra's history in marine power is perhaps best demonstrated by its deep catalog of engine components. The brand's <a href="/7570-sierra-engine-gasket-set-5404">engine gasket sets</a> cover a wide range of outboard and inboard applications and are engineered to deliver reliable seals in the demanding thermal and chemical environment of a marine engine. For boaters performing seasonal overhauls, top-end rebuilds, or full engine restorations, Sierra gasket kits are a go-to resource trusted by professional marine technicians and DIY boaters alike.</p><h3>A Complete Marine Parts Partner</h3><p>Beyond instrumentation and engine internals, Sierra's catalog spans fuel systems, electrical supplies, steering components, shore power, and more — all covered by what the brand calls an industry-leading warranty. Sierra also maintains a comprehensive parts-finder tool that enables cross-referencing with OEM part numbers from major manufacturers including Mercury, Yamaha, Suzuki, Volvo Penta, and others, making it straightforward to find the right replacement part for virtually any application.</p>

Part Number

118-0711
09/10/2036 9:54 PM
Sale Price

$22.19

In Stock (8)

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Usually delivered within 2 days

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No Hassle Returns

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Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-0711 Float Chamber Gasket is a precision-engineered replacement gasket designed for Yamaha outboard engines. This critical fuel system component creates a reliable seal for the VST (Vapor Separation Tank) float chamber, ensuring proper fuel system operation and preventing leaks that could compromise engine performance.

Key Features:

  • Direct replacement for Yamaha OEM part number 66K-14984-00-00
  • Manufactured to meet or exceed original equipment specifications
  • Compatible with Sierra VST filter kits 18-79952 and 18-79953
  • Designed to maintain proper float system function without leaking
  • Quality construction ensures long-lasting, reliable performance

Application:

Fits Yamaha 2-stroke 6-cylinder outboard engines from 1999-2019, including 150hp, 175hp, 200hp, 225hp, 250hp, and 300hp models across multiple series (DX, LX, LZ, PX, VX, VZ, Z, SX, S, V, and L series).

Sierra Marine products are trusted by OEM engine manufacturers and boat builders worldwide, offering reliable performance for repair work, complete replacements, or new builds. This gasket ensures your fuel system operates at peak efficiency when your engine needs it most.

I got the part on time but it's not the right part I've been trying to send it back for almost two and a half weeks I really need to get my money back

Can&amp;#039;t beat the price.

Easyto use and check out

great and easy

great!

Thank you. The a/c unit arrived a lot quicker to IN than we expected. We were able to install it on the boat the night before we left on a family vacation trip with the boat.

Easy to use website, good prices

You folks had the best price for this unit, hands down. I regret not being able to comment on this camera since I haven't been out fishing with it yet. But I can say the purchase experience was trouble free and it got here in the time frame promised. Thanks!!

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