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Top 10June 2025

Best Marine Fuel Water Separator 5/16

We made a list of the top 10 Marine Fuel Water Separator 5/16 based on verified reviews, popularity and other factors which we summarized for you in this list.

Best Choice

AUIVERED R12T Marine Fuel Water Separator Kit, 10 Micron Filter, Replace S3240 120AT, Fit 1/4 Inch NPT Outboard Motors for Gas & Diesel Engines Includes 2 fittings, 2 plugs

AUIVERED R12T Marine Fuel Water Separator Kit, 10 Micron Filter, Replace S3240 120AT, Fit 1/4 Inch NPT Outboard Motors for Gas & Diesel Engines Includes 2 fittings, 2 plugs

✓【HIGH-EFFICIENCY FILTRATION】- Adopting advanced filtration technology, it can effectively separate water and impurities in the fuel, with a filtration efficiency of up to 99%, filtering pollutants of 4 microns and above, providing clean fuel for the engine and significantly prolonging the service life of the engine.
✓【WIDE ADAPTABILITY】- Designed for 1/4-inch NPT interface, it is suitable for all kinds of marine gasoline and diesel engines, and also suitable for tractors, skid steers and other compact off-road diesel equipment, with great versatility.
✓【HIGH-FLOW DESIGN】- Maximum flow rate of 15 gallons per hour (57 liters per hour) under diesel fuel conditions ensures that the engine will continue to receive a sufficient and stable supply of fuel during operation, resulting in strong power and stable performance.
✓【EASY MAINTENANCE DESIGN】- Equipped with a clear and visible filter cup, it is convenient for users to observe the fuel quality and water accumulation at any time, and carry out drainage operation in time. The overall structure design is rational, easy to disassemble and install, greatly reducing the difficulty of maintenance and saving maintenance time.
✓【APPLICATIONS & REPLACE PART NUMBER】- For R12T marine water fuel separator kit: NPT,ZG1/4-19 ( Port / Connecting Size M18 X 1.5 Center Thread ) REPLACES PART# Replace Racor Parker S3240, R12T,S3213,S3227,802893t and so on.

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Marpac Marine Boat Fuel/Water Separator 7-0860

Marpac Marine Boat Fuel/Water Separator 7-0860

19% Discount

Sierra International 18-7866 10 Micron, High Capacity Fuel Water Separator Filter for Yamaha MAR-FUELF-IL-TR, Medium

Sierra International 18-7866 10 Micron, High Capacity Fuel Water Separator Filter for Yamaha MAR-FUELF-IL-TR, Medium

Sierra International

✓Sierra Fuel Water Separators extract over 99.8 percent emulsified water from gasoline
✓Universal Fit
✓To protect sensitive inboard, sterndrive, and outboard fuel injection systems, Sierra 10 Micron Filters are recommended
✓Item model number: ‎18-7866

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24% Discount

Attwood 11841-4 Universal 10-Micron Fuel/Water Separator Filter with Double Gasket, Unspecified

Attwood 11841-4 Universal 10-Micron Fuel/Water Separator Filter with Double Gasket, Unspecified

✓Double seal for enhanced performance
✓Universal 3/8" (.85cm) ports
✓10 micron replacement capability
✓Replacement for: Mercury 35-60494-1, Aqua Power 6031, GLM 24940, Sierra 18-78250, SMI 15494, Valmar 52113, Marpac 7-0872

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16% Discount

Sierra International 18-7982-1 Marine Fuel Water Separator Kit, white

Sierra International 18-7982-1 Marine Fuel Water Separator Kit, white

✓All filters flow at 90 GPH to feed even the hungriest motor
✓Prevent damage to sensitive inboard, sterndrive and outboard fuel injection systems
✓Sierra fuel water separators remove over 99.8% of emulsified water from your gasoline
✓Sierra's 10 micron filters are over 90% efficient at removing particles as small as 10 micron
✓Material : Aluminum (Tall Filter)
✓Fit type: Universal Fit

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Marine Boat Spin-On Fuel Filter Water Separator Kit 35-802893Q4 802893Q4 18-7983-1 18-7848-1

Marine Boat Spin-On Fuel Filter Water Separator Kit 35-802893Q4 802893Q4 18-7983-1 18-7848-1

✓Aftermarket water separator kit,includes filter head, water separating fuel filter,fittings
✓Offering corrosion-resistant & long service life
✓Compitable with 35-60494-1 35-807172 18-7944 35-55501 35-57250 35-806771 35-802893T 35-802893Q ABB-FUELF-IL-TR
✓10 micron filters are over 90% efficiency at removing particles as small as 10 microns
✓For all 2 and 4 cycle engines

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iFJF R12H (R12T Upgrade) Fuel Water Separator Marine Complete Combo - Replaces S3240 120AT NPT ZG1/4-19 Automotive Replacement Spin-on Filter Includes 2 Fittings 2 Plugs

iFJF R12H (R12T Upgrade) Fuel Water Separator Marine Complete Combo - Replaces S3240 120AT NPT ZG1/4-19 Automotive Replacement Spin-on Filter Includes 2 Fittings 2 Plugs

✓New upgrade: This product is an upgraded version of R12T. The R12T filter element is not removable, and the housing needs to be replaced at the same time as the replacement. The R12H filter element is detachable, and you only need to replace the internal filter element each time, which greatly saves your cost. Please note: The internal filter element requires a certain amount of effort to be pushed out.
✓Buyer Benefits: Two filter elements and two O-rings are given for free, so there are three filter elements and four O-rings in total. Package includes: 1 x R12H Fuel Water Separator complete combo, 2 x connection fittings, 2 x plugs, 2 x additional filter elements, 2 x additional O-rings.
✓Material Upgrade: For ships going to sea, iron products are very easy to be damaged due to the influence of seawater and sea breeze. The upgraded R12H adopts aluminum alloy material and plastic-sprayed processing technology as a whole, which effectively avoids the above-mentioned problems.
✓Replace Part Number: S3240 R12T 120AT, 18-7987, RK10222.
✓Features: This spin-on filter design is easy to replace, and other parts except the filter element can be reused. The black valve under the transparent nylon collection bowl can control the discharge of water. The R12H filter is designed for high-performance applications, and with a flow rate of 15 GPH. Through the advanced large-capacity filter media, water and particles as small as 10 microns are removed to ensure that the incoming fuel is free of water and other particles.
✓It is recommended to check and replace the oil cup and filter element regularly.

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Kofil R12T Fuel Water Separator Marine Fuel Filter/Water Separator Assembly, for Outboard Motor Marine Engine, Replaces# S3240 120AT with 2 3/8" Barb × 1/4" NPT Male Fittings 2 Plugs,10 Micron

Kofil R12T Fuel Water Separator Marine Fuel Filter/Water Separator Assembly, for Outboard Motor Marine Engine, Replaces# S3240 120AT with 2 3/8" Barb × 1/4" NPT Male Fittings 2 Plugs,10 Micron

✓Efficient Multi-layer Filtration: Features a high-performance 3-layer filter element, can remove up to 99% of water and harmful debris from gasoline/diesel. Helps prevent damage to fuel injectors and other sensitive engine components
✓Specifications: Suitable for gasoline and diesel outboard engines. Maximum flow rate: 15 GPH, Micron rating: 10 microns. Please check your engine’s flow rate and filtration requirements before purchasing
✓Durable Construction: The filter body is coated with a rust-resistant layer to prevent corrosion from water. The element has deeper and denser pleats than others, allowing it to capture more debris and extend the lifespan of the separator
✓What's in the Package: Includes everything you need for installation: 1 x R12T assembly, 1 x Sealant Tape, 2 x Plugs, 2 x 3/8" Barb × 1/4" NPT Male Fittings. Ready for easy installation right out of the box
✓Maintenance & Support: We recommend replacing the filter every 500 hours or 10,000 miles to maintain optimal performance. For any questions or concerns, please feel free to contact us, we’re always here to help

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BARTOO R12T Fuel Water Separator Marine,10 Micron Fuel Filter Marine Parts Replace S3240 120AT NPT ZG1/4-19 Fit 3/8-inch NPT Outboard Motor

BARTOO R12T Fuel Water Separator Marine,10 Micron Fuel Filter Marine Parts Replace S3240 120AT NPT ZG1/4-19 Fit 3/8-inch NPT Outboard Motor

✓FUNCTION - Regardless of how carefully fuel is handled, dirt and water manage to find their way to your tank. It is the fuel filter’s job to stop contaminates before the damage injectors and other sensitive engine parts.BARTOO fuel water separator marine removes almost 100% of water and moisture contaminates!
✓SPIN-ON FILTER DESIGN - Spin-On design makes changing filter elements quick and easy.
✓UPGRADE STRUCTURE - 10 micron filters are designed for high performance applications,and with flow rate of 30 GPH on the R12T model,your engine will perform better than ever with clean,water-free fuel,Replacement gasket and O-ring are included with element to prevent leakage at mounting head and re-usable bowl.The reusable transparent nylon collecting bowl allows you to clearly see the quality of the fuel used to know when to replace the nylon bowl.
✓APPLICATIONS & REPLACE PART NUMBER - For R12T marine water fuel separator kit: NPT,ZG1/4-19 ( Port / Connecting Size M18 X 1.5 Center Thread )REPLACES PART# Replace Racor Parker S3240, R12T,S3213,S3227,802893t and so on.
✓FITMENT - It can be installed on agricultural machinery, generator sets and outboard engines. Products are mainly used in:boat, trucks, automobiles, construction machinery, generator sets, ship engines, mining equipment, industrial machinery and equipment, petroleum equipment, air compressors and other machinery and tools.

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Fuel Filter Water Separator Replacement for Marine Outboard Motor Mercury with 3/8" Barb x 1/4" NPT Fittings Replaces# S3213, 35-60494-1, 18-7932-1, 18-17928, 35-809097

Fuel Filter Water Separator Replacement for Marine Outboard Motor Mercury with 3/8" Barb x 1/4" NPT Fittings Replaces# S3213, 35-60494-1, 18-7932-1, 18-17928, 35-809097

✓PERFORMANCE: Keeping a clean fuel filter in your vehicle can reduce damage done to your engine and other fuel delivery components. This 10 micron fuel filter can screens out dirt, rust and other particles from the fuel, ensuring a steady flow of clean fuel for optimal engine performance
✓PREMIUM QUALITY: Outstanding filtration matters, that is why our fuel water separator are crafted from high-grade filter medium that provide maximum filtration and minimal flow restriction. Deliver increased flow and efficiency that are demanded in the fuel system
✓LONG LIFE-SPAN: The outboard fuel filter has went through rigorously testing so that you will get a fairly reliable fuel filter, features anticaustic housing, multi-layer filter and superior sealing components to ensure leakage resistance and extreme durability under various operating conditions
✓APPLICATION: Perfect for a variety of universal fuel applications, mostly used on outboard marine engines. REPLACE OE#: 35-60494-1, S3213, B32013, 18-7932-1, 18-7932, 18-7928-1, 18-7928, 35-809097, MAR-24563-03-00, 18-7919, 18-7919-1, 35604941, B32013, 1879321, 187932 , 1879281, 187928, 35809097, MAR245630300, 187919, 1879191
✓PACKAGE: It comes with 3/8-Inch Barb x 1/4-Inch NPT brass fittings and a roll of PTFE thread tape as pictures show. Please wrap teflon tape around fittings thread to prevent leaks from these plugs

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