Best Fuel Filters for Marine of 2025

The KOFIL R12T Fuel Filter Marine Water Separator Complete Kit is an essential tool for those with diesel engines. Made from original Italy Ahlstrom 3 layers filter paper, this filter is designed to filter out 99% of water, impurities, and contaminants at 4 microns. This high-quality filter protects your vehicle's fuel system from contaminants such as dirt, rust, and paint particles. With a longer lifespan than other filters, it only needs to be replaced after driving for an average of 20,000-40,000 miles. The kit contains everything needed to replace the filter on your vehicle, and it is certified by Germany TUV IATF16949, ISO14001, OHSAS18001 and USA Standard: Passed SAE1839 Standard Society of Automotive Enginess.

The iFJF R12H Fuel Water Separator Marine Complete Combo is an upgraded version of R12T that has a detachable filter element, which saves the user cost. The product comes with two filter elements and two O-rings for free, and the 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. The R12H adopts aluminum alloy material and plastic-sprayed processing technology, making it suitable for ships going to sea. The filter design is easy to replace, and the black valve under the transparent nylon collection bowl helps control the discharge of water. The R12H filter has a flow rate of 15 GPH and removes water and particles as small as 10 microns.

Introducing the LOCOPOW Fuel Filter Replacement, a top-notch fuel filter designed to enhance the performance and durability of your fuel system. This fuel filter is a pro replacement part for SIERRA 18-7831, as well as compatible with Mercury Marine 802128A1 802128, OMC Johnson Evinrude 398319, and Yamaha GP1-U775C-10-00. Crafted with advanced high-quality filter paper and a hard plastic housing, this fuel filter ensures increased flow area, effectively preventing water and impurities from entering your fuel system. By doing so, it reduces mechanical wear and protects your engine from potential damage. With a wide range of use, this fuel filter is suitable for 3/8 inches inside diameter fuel hoses. Experience peace of mind with LOCOPOW's after-sales quality assurance, ensuring that you receive a product that meets the highest standards. Upgrade your fuel system with the LOCOPOW Fuel Filter Replacement and enjoy improved performance and longevity for your engine.

Quicksilver Fuel Filter is designed to protect your engine by removing harmful fuel contaminants. With 25 micron filtering elements, it effectively filters out damaging particles, ensuring optimal engine performance. The polyester/cellulose/glass fiber construction with a phenolic binder coated with silicon enhances durability. Manufactured to meet Mercury Marine specifications, this fuel filter provides reliable protection. Investing in Quicksilver Fuel Filter guarantees cleaner fuel, prolonging your engine's life and improving its efficiency.

The Attwood Fuel Filter is designed for easy maintenance with its clear body, allowing you to visually inspect the filter's condition. Built to withstand tough marine environments, its high-strength construction ensures durability, so you can trust it to perform well even in challenging conditions. For added convenience, this filter is disposable, making replacements quick and hassle-free. It’s also compatible with 3/8 inch fuel lines, ensuring a seamless fit for most outboard motors. By replacing it during winterization or spring start-up, you can ensure optimal performance throughout the boating season.

This aftermarket water separator kit includes a filter head, water separating fuel filter, and fittings. It offers a long service life and is resistant to corrosion. The kit is compatible with various engine models and has a 10 micron filter with over 90% efficiency at removing small particles. Suitable for all 2 and 4 cycle engines.

The Quicksilver 816296Q2 Marine Engine In-Line Fuel Filter with Barbs is designed to be used with 5/16" (8mm) fuel lines, making it easy to replace older fuel filters. The replacement fuel filter cartridge removes damaging contaminants, such as water moisture or other particles that could rob horsepower from your engine, before they can get to your engine. This helps to ensure optimal engine performance.

The BARTOO Fuel Water Separator is designed to protect your engine by filtering out dirt and water from your fuel. Its effective filtration system removes nearly all moisture, ensuring that your engine runs smoothly. With a spin-on filter design, you can easily change the filter without hassle. The high-performance 10-micron filter allows for a flow rate of 30 gallons per hour, enhancing your engine's performance with cleaner fuel. Additionally, this model includes a reusable transparent bowl, allowing you to monitor fuel quality and know when it’s time for maintenance.

The S3213 Fuel Filter Marine Fuel Water Separator is a direct replacement for Marine Outboard Motor Mercury, with OEM# 35-60494-1, S3213, 18-7932-1, 18-17928, 35-809097. It features original Italy 3 layers filter paper made of synthetic fiber, which protects the fuel pump nozzle, cylinder liner and piston ring, greatly reducing wear and tear and fuel consumption. The package includes one S3213 Marine fuel filter and installation is plug-and-play, with no modification needed to the electrical system. A 12-month warranty is included.

Quicksilver Fuel Filter is designed to deliver clean fuel for optimal engine performance. With 10-micron filtration that boasts over 90% efficiency, this filter prevents harmful debris from reaching your engine, ensuring its longevity. Moreover, its water-separating feature keeps performance-degrading water away, enhancing engine efficiency and fuel economy. By following the seasonal replacement recommendation or your owner's manual, you can maintain your engine's peak performance effortlessly.