Sierra 18-7848-1 Fuel Water Separator Filter Kit, 1/4 Inch Aluminum Bracket, Short Filter, Replaces Mercury 35-60494A4

The Sierra 18-7848-1 is a fuel water separator filter kit built to protect gasoline-fed inboard, sterndrive, and outboard fuel injection systems from water contamination. This kit uses a 1/4 inch aluminum mounting bracket paired with a short-style filter element, and it removes over 99.8 percent of emulsified water from gasoline before it can reach sensitive fuel system components. Every filter in this kit flows at 90 gallons per hour, so fuel delivery keeps up even with high-demand engines.

The kit includes one 18-7844 filter element, one 18-7853-1 aluminum mounting bracket, and two 18-4256 1/4 inch pipe plugs, giving you everything needed to install a complete separator assembly in one package. The aluminum bracket construction resists corrosion in a marine engine bay environment while keeping the assembly lightweight. Sierra fuel water separators are built to meet or exceed original equipment quality, making the 18-7848-1 a straightforward replacement for a range of OEM and cross-brand fuel water separator kits sold under Mercury, Mercruiser, GLM, Mallory, Suzuki, and Yamaha part numbers.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7848-1
• Product Type: Fuel Water Separator Filter Kit
• Filter Size: Short Filter
• Pipe Thread Size: 1/4 inch
• Bracket Material: Aluminum
• Included Filter: 18-7844
• Included Bracket: 18-7853-1
• Included Pipe Plugs: Two 18-4256, 1/4 inch
• Flow Rate: 90 gallons per hour
• Water Removal Efficiency: Over 99.8 percent of emulsified water
• Weight: 2.17 pounds
• UPC: 808282244866

Fitment

This is a gasoline fuel water separator kit for inboard, sterndrive, and outboard engines using a 1/4 inch pipe thread bracket configuration.

Replaces (OEM)

• GLM 24951
• Mallory 9-37850
• 9-37853
• Mercruiser 52444
• 35-802893A4
• Mercury 35-60494A4
• 35-802893Q4
• 35-805269A4
• 35-807172A4
• 35-57250A1
• 35-55501A1
• 35-52456A1
• 35-60494A1
• 32-802893Q4
• 35-604944
• MERCURY MARINE 32-802893Q
• SUZUKI 99105-20001
• YAMAHA ABA-SEPAR-AT-OR

Frequently Asked Questions

What does the Sierra 18-7848-1 fuel water separator kit include? The kit includes one 18-7844 filter element, one 18-7853-1 aluminum mounting bracket, and two 18-4256 1/4 inch pipe plugs, giving you a complete separator assembly in a single package.

What OEM part numbers does the 18-7848-1 replace? This Sierra kit cross-references to GLM 24951, Mallory 9-37850 and 9-37853, Mercruiser 52444, Mercury 35-802893A4, 35-60494A4, 35-802893Q4, 35-805269A4, 35-807172A4, 35-57250A1, 35-55501A1, 35-52456A1, and 35-60494A1, as well as 32-802893Q4, 35-604944, Mercury Marine 32-802893Q, Suzuki 99105-20001, and Yamaha ABA-SEPAR-AT-OR.

What thread size is the pipe plug on this filter kit? The 18-7848-1 uses two 1/4 inch pipe plugs, part number 18-4256, matching the 1/4 inch aluminum bracket configuration of this kit.

Is the mounting bracket on this kit made of aluminum or stainless steel? The 18-7848-1 uses an aluminum bracket. Sierra also offers stainless steel bracket versions of this filter kit under different part numbers if you need that material instead.

How much water does this filter remove from fuel? Sierra fuel water separator kits, including the 18-7848-1, remove over 99.8 percent of emulsified water from gasoline before it reaches the fuel injection system.

What is the flow rate of the 18-7848-1 filter? This filter flows at 90 gallons per hour, which is rated to keep up with high-demand marine engines.

Does the 18-7848-1 use a short or tall filter element? The 18-7848-1 kit uses the short filter element (18-7844) and a 18-7853-1 bracket. A tall-filter version of this same 1/4 inch aluminum kit is also available under a different Sierra part number.

How much does the 18-7848-1 filter kit weigh? The Sierra 18-7848-1 fuel water separator kit weighs 2.17 pounds.

Will this kit work on both gasoline and diesel engines? The 18-7848-1 is designed for gasoline fuel systems, protecting inboard, sterndrive, and outboard gasoline fuel injection systems from water contamination.

Is the Sierra 18-7848-1 a genuine OEM part or aftermarket replacement? The 18-7848-1 is a Sierra aftermarket replacement kit that meets or exceeds the quality of the original equipment parts it cross-references, such as Mercury 35-60494A4.

What is the UPC for the Sierra 18-7848-1 kit? The UPC for the Sierra 18-7848-1 fuel water separator kit is 808282244866.