Best Fuel Water Separator in 2023 (Top 10 Picks)

Sometimes it might be quite difficult to find the best fuel water separator. With every niche market offering so many different products, it makes sense that this is the case.

Unfortunately, this very fact can make it incredibly difficult to find the item that best suits your needs, which is why we’ve put together this fuel water separator buying guide.

Our Favorite Picks:

Best Fuel Water Separator Reviews:

SaleBestseller No. 1
R12T Fuel Filter Marine Water Separator Complete Kit Replaces Racor S3240 120AT R12T NPT ZG1/4-19 Fit 1/4 Inch NPT Outboard Motors for Gasoline and Diesel Marine Engine with Four Fittings
  • 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;
  • 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 1/4 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;
  • REPLACE PART NUMBER: Replaces S3240 R12T 120AT, Replaces Sierra 18-7987; Replaces RK10222;
  • 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.
SaleBestseller No. 2
Sierra International 18-7945 10 Micron Fuel Water Separating Filter for Mercury/MerCruiser and Yamaha
  • Sierra Fuel Water Separators Remove over 99. 8% of Emulsified Water from your Gasoline
  • Over 90% Efficient at Removing Particles as small as 10 Micron AND Flow at 90 GPH to Feed even the Hungriest Motor
  • Sierra 10 Micron Filters are Recommended to prevent Damage to Sensitive Inboard, Sterndrive and Outboard Fuel Injection Systems
  • Replaces: Mercury/MerCruiser 35-802893Q01, 35-604941, 35-60494, 35-55501, 35-57250, 35-60494A5, 35-806771, 35-8052691, 35-802893Q, 35-807172 and Yamaha ABB-FUELF-IL-TR
  • All Sierra parts qualify for and are covered under Sierra's Industry Leading Customer Satisfaction
Bestseller No. 3
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
  • 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
SaleBestseller No. 4
CARMOCAR Fuel Filter Water Separator replacement for Marine Outboard Motor Mercury with 3/8" Barb x 1/4" NPT brass Fittings Replaces# S3213, S3214, 35-60494-1, S3213, 18-7932-1, 18-17928, 35-809097
  • 【Marine Diesel & Water separator】: Perfect for a variety of universal fuel applications, replacement for Marine Outboard Motor Mercury.
  • 【Part number】: replacement for Mercury 35-60494-1,S3213, B32013,18-7932-1, 18-7932, 18-7928-1, 18-7928 ; Filter Replaces for Mercury Marine 35-809097 ; replacement for Yamaha MAR-24563-03-00, 18-7919, 18-7919-1;Bowl Replaces 18-7922-1, 18-7922 ;Bracket Replaces 18-7853-1.
  • 【3/8 NPT ports】: Fuel Water Separator 3/8 NPT ports offer lower pressure drop rates.10 micron filters are over 92% efficient at removing particles as small as 10 microns, Trap The Smallest particles and emulsified water from gasoline. So a clean fuel filter can reduce damage done to your engine and other fuel delivery components.
  • 【HIGH QUALITY】: The filter is constructed of premium aluminum material for long lasting durability and reliability.multi-layer filter and superior sealing components to ensure leakage resistance and extreme durability under various operating conditions.
  • 【Package included】: As pictures show,It comes 1 x Fuel Water Separator Marine with 3/8-Inch Barb x 1/4-Inch NPT brass fittings.
SaleBestseller No. 5
Sierra International 18-7866 10 Micron, High Capacity Fuel Water Separator Filter for Yamaha MAR-FUELF-IL-TR, Medium
  • 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
Bestseller No. 6
Upgraded Diesel Marine Fuel Filter Turbine Water Separator 900 SERIES 900FH 90GPH|With Hand Twist Vavle|Fit For Trucks Outboard Marine Engines & More Construction Machinery Vehicles
  • 【PERFORMANCE】If you are experiencing the following situations: your vehicle drives feebly, worried about the damage to your vehicle from impurities in the gasoline, withstand expensive vehicle maintenance costs, always go to the garage to check the grease nozzle. Then it's time for a new 900FH filter!
  • 【PREMIUM QUALITY】Filter diesel particles, impurities and moisture in the engine fuel system, protect the nozzle of the diesel fuel injection pump, reduce wear and avoid blockage, reduce the maintenance cost of the engine, and extend the life of the engine!
  • 【LONG LIFE-SPAN】With upgraded hand twist valve, more convenient to discharge water.The 900 series filter has went through rigorously testing so that you will get a fairly reliable fuel filter, high-grade aluminum parts with corrosion resistance, high quality filter and superior sealing components to ensure leakage resistance and extreme durability under various operating conditions.
  • 【REPLACEMENT FOR】2000 TT Base Coupe 2-Door, 1999 TT Base Coupe 2-Door. Perfect for a variety of universal fuel applications, mostly used on heavy trucks and outboard marine engines. The 900FH Turbine separator can also be used in excavators, construction machinery vehicles, harvester, bus, etc.
  • 【REPLACE】900 SERIES 900FH 900FG. The 900FH series is rated for a max flow rate of 90 Gallons Per Hour. If your engine requires more you may need to look at the 1000 series unit which doubles that flow rate at 180 Gallons Per Hour.
Bestseller No. 7
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
Bestseller No. 8
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.
  • 【FUEL FILTER PACKAGE INCLUDED】1×S3213 Marine fuel filter.
  • 【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.
  • 【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.
SaleBestseller No. 9
Attwood 11841-4 Universal 10-Micron Fuel/Water Separator Filter with Double Gasket
  • Double seal for enhanced performance
  • 10 micron replacement capability
  • Replacement for: Mercury 35-60494-1
Bestseller No. 10
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.

Last update on 2023-06-06 / Affiliate links / Images from Amazon Product Advertising API

How to find the best fuel water separator?

Here, we’ll be going over a number of factors that you can use to ensure that you’re purchasing the best fuel water separator for you.

Regardless of which type of item you’re looking to buy, chances are that there are existing buying guides on the internet, all of which aim to give you good fuel water separator recommendations.

Despite these recommendations, however, it’s always a good idea to do your own research. In addition to this research, asking yourself the following questions is also super helpful:

  • What features does the fuel water separator need to have to be perfect for my needs?
  • What is my budget?
  • Do I need to purchase a certain brand?

Once you’ve answered these questions and have a good idea of what you’re looking for and the buying process becomes much easier. Keep in mind that when looking for the best product, there’s no need to rush. In fact, very rarely are the ideal products found by choosing the first one you see or by basing your decisions on only one factor. Take your time and enjoy the process!

Now, with the answers to the previous questions in mind, we urge you to use our upcoming buying guide for fuel water separator to find what you’re looking for:

Brand

In some cases, the brand of fuel water separator is very important. For example, if you’re looking for an item that works in tandem with another, you might very well need both products to be the same brand. If this is the case, it’s vital to pay attention to this factor, as choosing the wrong product can mean the difference between wasting your money and buying a great product that functions as it should.

Features

The features in any given fuel water separator are important because they can dictate which version of an item you need and how much money you need to spend. Consider all the key features that you want your item to have and don’t settle for anything that doesn’t check at least ¾ of your boxes.

Reviews

Customer reviews about fuel water separator are crucial – especially when you’re buying a product that costs a lot of money or serves a big importance. Luckily, most products can be found online, which means that it’s common for there to be scores of customer reviews from those who have already purchased any given product.

Pay attention to these reviews. Take note of the pros and cons that they mention, and factor these into your big decision. In some cases, you’ll be forced to sacrifice one con in order to gain a particular pro, but being aware of the potential con is going to be beneficial in either case.

Quality

Of course, quality is key. You don’t want to purchase a low-quality product. If you do, you run the risk of your item breaking, not working properly, or otherwise proving to be very disappointing, as well as a waste of money.

You can compare fuel water separator quality by researching what your potential purchases are made from, contrasting the individual items against each other to discern which one is made of the best materials.

Warranty

Warranty isn’t always going to be important, but it definitely can be. This is especially true if the item in question is tech-related or expensive. A good warranty will be valid for an extended time after purchase and cover a variety of problems ranging from item defects to random accidents, water damage, and other miscellaneous events that could ruin your product.

Conclusion

The quest to find the best fuel water separator can be daunting – but it doesn’t have to be. It can be made much easier by asking yourself a few simple questions and then thinking critically about the items you want to buy. Consider their features, quality, brand, warranty, and customer reviews and you’re more likely to make a great purchase.