The best fuel water separator funnel depends on your transfer rate, fuel type, and replacement needs. For a high-flow AF15CB-style option, the MFZDQL AF15CB is listed at 12 GPM; the CZTHQP and VODCACA models also target fast transfers. The MFZDQL AF8CB is a lower-flow choice for smaller equipment, while the Splicitools separator is designed around replaceable filter elements. Compare the stated flow rates and filtration details before choosing, and verify that the product matches your equipment and fuel-handling setup.
| Product | Best for | Key listed detail |
|---|---|---|
| MFZDQL AF15CB | Fast, versatile transfers | 12 GPM; 10-micron screen |
| CZTHQP AF15CB | AF15CB replacement use | 12 GPM; multiple fuel types |
| VODCACA AF15CB | Portable heavy-duty use | 12 GPM; corrosion-resistant material |
| MFZDQL AF8CB | Smaller transfer jobs | 5 GPM; AF8CB replacement |
| Splicitools Separator | Replaceable-element maintenance | Four double-layer elements; 12-micron filtration |
MFZDQL AF15CB 12 GPM Fuel Filter Funnel

This AF15CB-style funnel is best for buyers who need a stated 12-gallon-per-minute transfer rate and broad equipment coverage. The listing names cars, trucks, motorcycles, ATVs, boats, tractors, lawn mowers, generators, and power tools. It also lists gasoline, diesel, heating oil, kerosene, and two-stroke mixtures.
The product description specifies a screen that filters water, dirt, sand, and particles as small as 10 microns. It describes high-strength composite construction with resistance to fuel corrosion, impact, and temperature extremes. Choose this model if flow speed and stated filtration detail are priorities. Its main limitation is that the listing does not provide a filter-element replacement interval or detailed maintenance schedule.
CZTHQP AF15CB Portable Fuel Funnel

The CZTHQP is best for shoppers seeking a stated AF15CB replacement with a 12 GPM flow rate. Its listed applications include automobiles, lawn mowers, pressure washers, generators, gas-powered tools, snowmobiles, tractors, and boats. The seller describes it as compatible with gasoline, diesel, heating oil, kerosene, and two-stroke fuel mixtures.
This model was selected for its clear replacement designation, broad equipment list, and fast-flow claim. It may suit small- to medium-sized engines where reducing transfer time matters. The product information does not state a micron rating or describe replaceable filter elements, so buyers who need a specific particle-size specification should compare other listings or confirm details before purchasing.
VODCACA AF15CB Heavy-Duty Fuel Filter

Choose the VODCACA AF15CB if portability and a high stated transfer rate are important. The listing gives a flow rate of 12 GPM and says the funnel filters gasoline, diesel, heating oil, kerosene, and two-wheel gasoline mixtures. It also describes high-density construction intended to remove water, dirt, and debris.
This product is best for buyers who want an AF15CB-format option for vehicle or equipment refueling and value the seller’s claims of corrosion resistance and factory testing. The listing says it is designed to meet or exceed OEM specifications, but it does not identify specific equipment fitments or a micron rating. Verify the intended connection and application rather than assuming universal fit from the product title.
MFZDQL AF8CB 5 GPM Portable Filter

The AF8CB is best for smaller or moderate transfer tasks where the listed 5 GPM rate is adequate. The seller describes it as a direct replacement for AF8CB and lists gasoline, diesel, heating oil, and kerosene. Suggested equipment includes lawn mowers, pressure washers, generators, tractors, boats, and gas-powered tools.
The listing highlights high-density material and corrosion resistance. Its lower stated flow rate makes it a better fit for buyers who do not need the 12 GPM claims of the AF15CB options. Avoid choosing it solely by appearance: confirm that AF8CB is the replacement type required for your setup. The product details do not state a micron rating or provide a maintenance interval.
Splicitools Funnel With Four Filter Elements

The Splicitools funnel is best for buyers who prefer a separator with removable filter elements rather than selecting mainly by a stated GPM rate. Its listing describes four double-layer elements and filtration of impurities larger than 12 microns. It is presented for diesel and fuel transfer, with a rust-free construction claim.
The removable elements are intended to be replaced when maintenance is needed, which may appeal to equipment owners who want a serviceable filter arrangement. This product was selected for its explicit element count and filtration rating. Its listing does not state a flow rate or provide a detailed list of compatible fuels and equipment, so it is less suitable when those specifications are essential.
Buying Guide: How to Choose a Fuel Water Separator Funnel
Which flow rate fits your transfer job?
Compare the listed GPM rating with how quickly you need to transfer fuel. The AF15CB products above claim 12 GPM, while the AF8CB listing gives 5 GPM. These are seller-provided specifications, not a guarantee of the rate in every setup. Hose size, fuel conditions, and transfer arrangement may affect actual performance.
What fuel and equipment will you use?
Check the product’s stated fuel list and replacement designation before ordering. Listings differ: some name gasoline, diesel, kerosene, or heating oil, while others also mention two-stroke mixtures. Match the model designation to the part you are replacing, and confirm application details if the product page does not identify your equipment.
How important is filtration detail?
A micron rating describes the particle size the listing says the filter can capture. The MFZDQL AF15CB listing specifies 10 microns; Splicitools specifies impurities larger than 12 microns. Do not treat these claims as independent testing or assume that a micron figure alone describes water-separation performance.
Do you need replaceable filter elements?
For a serviceable setup, check whether replacement elements are identified and available. Splicitools describes four removable double-layer elements, while other options in this selection do not give the same element details. Consider handling, cleaning, and replacement instructions before regular use.
Frequently Asked Questions
What does a fuel water separator funnel do?
It is intended to help filter contaminants, including water or debris, from fuel as it is transferred. The filtration details vary by model, so review the specific product claims.
Is a 12 GPM funnel always better than a 5 GPM model?
No. A higher stated flow rate may suit faster transfer jobs, while a lower rate can be adequate for smaller tasks. Choose based on the transfer need and equipment match.
Can one funnel work with every fuel type?
No universal fuel compatibility should be assumed. Check the specific listing for the fuels it names, and verify suitability for your application.
What does a 10- or 12-micron rating mean?
It is a stated particle-filtration size. Compare ratings only when the product listings describe them clearly, and remember that a micron figure does not by itself explain every aspect of water separation.
Should I choose an AF8CB or AF15CB model?
Choose according to the required replacement designation and the stated flow rate. The AF8CB listing gives 5 GPM; AF15CB options in this selection state 12 GPM.