Best Fuel Water Separator in 2022 : Top 10 Models Uncovered

In the present, Fuel Water Separator becomes more and increasingly popular among people. Thus, if you’re interested in learning more about the software, we highly recommend that you continue reading Fuel Water Separator Reviews.

If you’re looking to get the best done with the least effort to do it, the Best Fuel Water Separator is a good choice! The amazing products are an amazing value.

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Comparison Chart for Top Fuel Water Separator

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Our Recommendation on the 10 Best Fuel Water Separator

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


  • 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
  • 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
  • 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
  • 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

Additional Info:

Height 4.92
Width 4.52
Length 10

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2. S3213 Fuel Filter Marine Fuel Water Separator With Clear Bowl Replacement for Marine Outboard Motor Mercury Replaces# 35-60494-1, S3213, 18-7932-1, 18-17928, 35-809097


  • 【Engines Fitment&Replace OEM#】 Marine Fuel Filter Marine Fuel Water Separator with clear bowl s3213 Fits for Marine Outboard Motor Mercury. Replaces 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, 18-7922-1, 18-7922, 18-7853-1.
  • 【Installation】No modification to the electrical system is required, plug-and-play, direct fit.Please always pre-fill clean fuel on the dirty side of the filter without opening the fuel cap.Do not reuse the old filter, it will cause great damage to the car engine. After installing the new filter, prime and start the engine, wait a few minutes, and then check for leaks.
  • 【FUEL FILTER PACKAGE INCLUDED】1×S3213 Marine fuel filter.
  • 【Quality materials】Original Italy 3 layers filter paper, made of synthetic fiber, filters the impurities in the fuel and protects the fuel pump nozzle, cylinder liner and piston ring, greatly reducing wear and tear and reducing fuel consumption.Filters are designed for high performance applications on the engine ,your engine will perform better than ever with clean,water-free fuel.
  • 【Quality Assurance】You can enjoy a 12-month warranty in our shop. Our shop guarantees to provide the best quality filters, where you can spend the least money to buy the best products. In addition, we will provide you with lifetime technical services. If you have any questions, you can contact us and we will solve it for you.

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3. S3213 Fuel Water Separator Marine Kit, 10 Micron Filter Effect is Suitable for 3/8 Inch Npt Outboard Motor Mercury 35-60494-1, 18-7932-1, 18-17928, 35-809097


  • Applicable Equipment: Suitable for various general fuel applications, Mostly Used On Outboard Marine Engines& Mercury Mercruiser Engine Gasoline.
  • Product Features: It comes with 3/8 inch barb x 1/4 inch NPT brass fittings. The filter is made of high-quality aluminum material with long-lasting durability and reliability.
  • Product Parameters: High performance 3/8 NPT port provides lower pressure drop rate, filter grade 10 microns.
  • Product Function: remove harmful pollutants, dust and other solid impurities contained in fuel to prevent fuel system blockage (especially fuel nozzles).
  • After-sales Service: Provide you with 90-day after-sales service. If you are not satisfied with the goods, please contact us in time, we will provide you with the best service.

Additional Info:

Color white

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4. R12T Fuel Filter Water Separator Complete Kit – Marine SPIN-ON R12T Filter Replaces S3240 120AT NPT ZG1/4-19 Fit 3/8 Inch NPT Outboard Motors For Diesel Engine With Four Fittings


  • REPLACE PART NUMBER: Replaces S3240 R12T 120AT, Replaces Sierra 18-7987; Replaces RK10222;
  • FITMENT: Filter for diesel engine. Don’t be caught in the water without one of these diesel spin-on filters. Fuel Water Separator Filter fit 3/8 Inch NPT Outboard Motors, suited to compact off road diesel equipment: tractors, skid steers loaders, movers;
  • LONGER LIFE SPAN: The imported material from Italy has a filtration efficiency of 99%, 3 layers,results in higher dust holding capacity than ordinary 1-2 layers, and longer life span, it needs to be replaced only after driving for an average of for 20,000-40,000 miles. Fuel Filter Kit contains everything you need to replace a fuel filter on your vehicle;
  • R12T MATEIRAL: Original Italy Ahlstrom 3 layers filter paper, made of synthetic fiber, filter 99% water, impurities and contaminants at 4 micron, higher filter rating than 5 or 10 micron filter, protects your vehicle’s fuel system from contaminants, such as: dirt, rust, and paint particles;
  • CERTIFICATES AND WARRANTY: Germany TUV IATF16949, ISO14001, OHSAS18001; USA Standard: Passed SAE1839 Standard Society of Automotive Enginess; 6 Months warranty. We will provide the best after-sales service. If you are not satisfied with the quality of our products after purchase, we will solve the problem in time.

Additional Info:

Color R12T Complete Kit
Weight 0.110231131

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5. 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


  • 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.
  • 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.
  • 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.

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6. Fuel Water Separator Marine Kit R12T 120AT NPT ZG1/4-19, 10 Micron Filter Effect Is Suitable for 3/8 Inch NPT Outboard Motor, Suitable for All Diesel Equipment


  • Applicable equipment: They are more suitable for compact off-road diesel equipment, which can be installed on tractors, skid steer loaders, porters, agricultural machinery, generator sets and outboard engines.
  • Product parameters: The assembly height is 1/4 inch, the port/connection size is M18 X 1.5 center thread, the filter grade is 10 microns, and the maximum flow rate is 30 GPH (57 LPH).
  • After-sales service: Provide you with one-year after-sales service. If you are not satisfied with the goods, please contact us in time, we will provide you with the best service.
  • Product function: Remove iron oxide, dust and other solid impurities contained in the fuel to prevent the fuel system from being blocked (especially the fuel nozzle).
  • Product features: This rotary filter design is easy to replace, the reusable transparent nylon collection bowl, and has an automatic exhaust device to remove excess dirt and water. The filter is made of high-quality aluminum material with long-lasting durability and reliability.

Additional Info:

Color off-white
Weight 1.2

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7. Quicksilver 802893Q01 Water Separating Fuel Filter – Mercury and Mariner Outboards and MerCruiser Stern Drive and Inboard Engines


  • 25 micron filtering elements remove damaging or performance robbing fuel born contaminants

Additional Info:

Color Unspecified
Height 4.5
Width 7.87
Length 11.75
Weight 0.01

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8. iFJF R12T Fuel Water Separator Marine 120AT NPT ZG1/4-19 Automotive Parts with Fitting -Complete Combo Filter Diesel Engine(Includes 2 fittings,2 plugs)


  • The filter housing is coated with a durable electrostatically applied powder coating for superior finish quality.Remove water and particles down to 10 microns in size,ensures that fuel arrives at your engine clean and water-free with its advanced high-capacity filter media.Provides best protection to your engine and improve its performance.
  • Attention:Please tighten the filter by yourself when installing it.Please fill the filter with fuel when installation.
  • This spin-on filter design is easy to replace and the reusable clear nylon collection bowl and features a self-venting drain for removing unwanted impurity and water.Tighten the valve,the water will not discharge.Release the valve,the water can be free to discharge.
  • For R12T Marine Fuel Filter/Water Separator complete assembly.NPT,ZG1/4-19.(Port/Connecting Size M18 X 1.5 Center Thread)(Include 2 fittings,2 plugs).Part Number:Replaces S3240 R12T 120AT;Replaces 18-7987;Replaces RK10222.
  • Filters are designed for high performance applications,and with flow rate of 15 GPH on the R12T model,your engine will perform better than ever with clean,water-free fuel.

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9. Teleflex 18-7944 Fuel Water Separator Filter, Original Version, Medium


  • Sierra’s 10 micron filters are over 90% efficient at removing particles as small as 10 micron
  • Fit type: Universal Fit
  • Ethanol blended fuel absorbs more water and loosens more particulants than regular fuels
  • Proper filtration is required for every horsepower engine
  • All filters flow at 90 GPH to feed even the hungriest motor

Additional Info:

Color Original Version
Height 0.393700787
Width 0.393700787
Length 0.393700787
Weight 0.3

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10. Sierra International 18-7989, Fuel Water Separator Filter,Medium


  • 0
  • 0
  • Thread Pitch: 13/16-18
  • Visit Amazon’s SONAR parts finder at fit-guideseastarsolutionscom to ensure this product will fit your application
  • Rating: 10 Micron

Additional Info:

Height 0.393700787
Width 0.393700787
Length 0.393700787
Weight 0.06

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Best Fuel Water Separator Buying Guide

When choosing the Top Fuel Water Separator appropriate for your needs you must consider the type work you’re tackling. Each kind of Fuel Water Separator is unique and has its own strengths and weaknesses.

Here are some of the most important aspects to take into consideration when selecting the Best Fuel Water Separator for your next task:

The type of task

First thing to consider is what kind of project you’re doing. Each kind of Fuel Water Separator is ideal for a specific set of tasks. They come with different attributes and functions based upon the demands.

Users also need to consider the type of materials they’ll be using in their design. This will determine the right Fuel Water Separator that is used, as well as any modifications that may need to be implemented.

Complexity of the Task

The other factor is the level of difficulty in the project. Complex projects are usually best handled by someone with more expertise or experience Keep this in mind when selecting the appropriate product.

This being said, whether you’re experienced and necessary it’s also good to be aware that there are plenty of highly sophisticated products available in the marketplace at present.

Material Weight and Size

The weight and size of your materials can also determine which Fuel Water Separator you’ll need. If the project you’re working on requires the use of heavy materials, it could be necessary to consider a more powerful model that can handle greater loads.

A product that can take on the size and weight of your products will guarantee long-lasting performance. It’s therefore crucial to keep this in mind.

Weigh and texture are the main characteristics of our materials.

The texture and density of the materials you’re working with is another aspect you need to consider, as it’s likely to impact your final product.

If the material is too soft, for example, it may not be suitable for processing with specific types of Fuel Water Separator. For instance, whether it’s too heavy or rough, the product may need to be altered in some manner.

If you’re working on delicate materials it’s crucial to look for a product that is likely to cause the most minimal wear and tear that is possible.

Special Features

Another aspect to take into consideration is whether your project needs some special features. For example, if it’s necessary to mark your product with an identifier like a serial number, barcode or number the product will require searching at the specific feature.

But even if these types of particular features aren’t necessary however, they may be beneficial.

In this case, it won’t be a bad idea to find products which have various options. This gives users more control over the final product, which may be something you’ll want to take into consideration when you’re making your choice.


Your product’s use is a different aspect to think about as it will impact the overall look and scale of your project.

It’s imperative to be upfront regarding how you’ll utilize your Top Fuel Water Separator and what that may take in the long term.

Price of Product

The price is another important thing to keep in your mind when choosing a product. If you have a limited budget the best option is to choose options within a particular range.

Also, examine an overall cost of different models and compare their overall value with each other before making a choice.

Keep all of these factors in mind while choosing the appropriate Fuel Water Separator to meet your requirements. By reviewing each of them prior to purchasing and ensuring that you make the right choice for your particular project.


Fuel Water Separator can provide you with more benefits than other product available. To ensure that you are making the right choice about purchasing this type of product, we recommend checking for our purchase tutorial that covers the Best Fuel Water Separator.

In any case, if all of this is too much for you or whether you need help regarding something specific, contact us and we’ll be delighted to assist!

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