My Account
Shopping Cart

Sierra 18-7852-1 Fuel Water Separator Filter Kit 10 Micron

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

18-7852-1
09/12/2036 8:20 AM
Sale Price

$41.09

In Stock (7)

delivery box

Usually delivered within 2 days

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-7852-1 Fuel/Water Separator Kit provides essential protection for marine engines by removing contaminants from fuel before they can damage your motor. This high-performance filtration system removes over 98.8% of emulsified water from gasoline, ensuring clean, dry fuel reaches your engine.

Key Features:

  • 10 micron filtration with over 90% efficiency at removing particles as small as 10 microns
  • High flow rate of 90 gallons per hour to supply even high-performance engines
  • Removes more than 98.8% of emulsified water from gasoline
  • Complete kit includes filter housing and replacement element
  • Designed for marine gasoline applications

Regular use of a quality fuel/water separator like the Sierra 18-7852-1 helps prevent corrosion, fuel system deposits, and engine performance issues caused by water contamination. The 90 GPH flow capacity ensures adequate fuel delivery without creating restrictions, even under demanding operating conditions.

Products specifications

Contains

(1) 7845 & (1) 7853-1

Filter Size

Tall

Microns

21

Replaces

Yamaha - ABB-SEPAR-AT-OR

Type

1/4" Aluminum

This is my first time ordering from Autoplicity and there's a good reason part of simplicity is the name. I buy stuff online all the time an this website is definitly easy to navigate. The price was resonable and shipping turnaround was fast.

Thanks

Best prices !!

Great

quick and easy to order

Quick and easy

Great price,fast shipping, will buy from again. Thanks

So far so good.

Great

Autoplicty had the best price by far for a transmission. Fast shipping too!<br>UNFORTUNATELY...FED-EX beat the hell out of it! It was hanging out of the box when it arrived but was not damaged other than a few scrapes. Fed-Ex is not the best way to ship 140lbs...they can't lift it! Oh, and they can't comprehend "this side up" either!

Very fast

Best price by far over 100 dollars different from amazon.com. I will definitely shop here agian

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy