Sierra Racor-Style Fuel Water Separator Kit 18-7932-1, 1/4 Inch Aluminum, Cartridge Style

The Sierra 18-7932-1 is a Racor-style fuel water separator kit built for marine fuel systems, with an aluminum housing sized for a 1/4 inch fuel line connection. This is a cartridge-style separator, meaning the internal filter element is replaceable rather than requiring a full housing swap once it reaches its service life. As a fuel water separator, its job is to pull water and particulate contamination out of the fuel stream before it reaches the engine, protecting injectors, carburetors, and fuel pumps from the corrosion and clogging that water-contaminated fuel causes over time.

Sierra engineers its inline and cartridge filters specifically for the demands of marine engines, including testing and approval for use with ethanol-blended fuels, which are more prone to phase separation and water absorption than non-ethanol fuel. The 18-7932-1 is listed under Sierra's Mercury outboard fuel filter line, making it a fit for boat owners maintaining Mercury outboard fuel systems who need a reliable water-separating stage ahead of the engine's primary fuel filter. The kit ships as a complete unit ready to install into a compatible fuel line.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7932-1
• Style: Cartridge
• Outer Material: Aluminum
• Port Size: 1/4 inch
• Unit Count: 1
• Weight: 2.4 pounds
• Package Dimensions: 22.3 H x 10.7 L x 20.6 W centimeters
• Country of Origin: United States
• UPC: 808282366896

Fitment

Sierra lists the 18-7932-1 in its Mercury outboard fuel filter lineup, for marine fuel systems using a 1/4 inch fuel line connection.

Frequently Asked Questions

What does the Sierra 18-7932-1 do? It is a fuel water separator that removes water and particulate contamination from marine fuel before it reaches the engine, protecting fuel pumps, carburetors, and injectors from water-related corrosion and clogging.

Is the 18-7932-1 a cartridge or spin-on style filter? The 18-7932-1 is a cartridge-style Racor-style separator, so the internal filter element can be replaced rather than swapping the entire housing at each service interval.

What is the housing made of? The housing on the 18-7932-1 is aluminum, chosen for its corrosion resistance in a marine fuel system environment.

What size fuel line does this fit? The Sierra 18-7932-1 is sized for a 1/4 inch fuel line connection.

Is the 18-7932-1 rated for ethanol-blended fuel? Yes, Sierra tests and approves its inline and cartridge filters, including the 18-7932-1, for use with ethanol-based fuels.

What engines is the 18-7932-1 designed for? Sierra lists the 18-7932-1 within its Mercury outboard fuel filter lineup for marine fuel systems.

How much does the 18-7932-1 weigh? The Sierra 18-7932-1 fuel water separator weighs 2.4 pounds.

How many units come in the package? The 18-7932-1 kit includes one Racor-style fuel water separator unit.

Is the 18-7932-1 a genuine Sierra part or a generic aftermarket copy? The 18-7932-1 is a genuine Sierra part, manufactured by Sierra International (Teleflex) as a Racor-style fuel water separator.

Where is the 18-7932-1 manufactured? The country of origin listed for the Sierra 18-7932-1 is the United States.

What are the package dimensions of the 18-7932-1? The packaged Sierra 18-7932-1 measures 22.3 cm high by 10.7 cm long by 20.6 cm wide.

Why install a fuel water separator like the 18-7932-1? Water in marine fuel accelerates corrosion and can starve or damage injectors and carburetors; the 18-7932-1 separates that water out before it reaches the engine, reducing the risk of fuel-related engine damage.