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Universal In-Line Fuel Filter

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Part# 15-05826
MFR Model# 8035339


Universal In Line Fuel Filter

In-line style universal fuel filter replaces any 1/4", 5/16" or 3/8" filter. Protects all carbureted engines. Clear body permits visual inspection.

NOTE: For use in carbureted gasoline engines only.
DO NOT use in fuel injected engines.

Note: Micron size information not available on this filter.
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


  • Length: 3-3/8"
  • Thread Size: 1/8" NPT
  • 100 microns


Excellent product they looked plastic on line but aren’t. They seem to be very high quality I’m using them on a Yamaha jet boat and shipping was super fast fast. Will definitely deal with Aircraftspruce again.

July 8, 2020

Excellent product they looked plastic on line but aren’t. They seem to be very high quality I’m using them on a Yamaha jet boat and shipping was super fast fast. Will definitely deal with Aircraftspruce again.

July 8, 2020

Filter was the perfect replacement for what I was currently using in my Kitfox.

June 26, 2020

I have used this these for years on everything from cars to motorcycles and aircraft.

Travis E
June 19, 2018

Super nice should work great!! Wish it had something to help mount it like a Universal mount Great price. Thanks

August 5, 2020

The female threaded ends of this fuel filter are are advertised as 1/8” NPT, but the brass 1/8” NPT barbed fittings I purchased to install on this do not fit without extreme difficulty, rendering their use impossible. As I purchased this filter to replace a nearly-identical unit which seems to share the exact same female threads, I did an experiment to see if one of the NPT brass fittings I had would indeed thread in to the old filter (and therefore the new one). The fittings would not thread in more than 1/4 turn into each filter by hand, and I could not wrench them in farther than halfway to where they should rightfully be without having to use what I’d describe as extreme force. I worried that the fuel filter body would crack if I tried to tighten the fitting any further. The male fitting’s threads were shaved off in the process. To me, this is unacceptable for airplane use. On the plus side, the plastic barbed fittings included with the fuel filter fit without any difficulty. I’m a bit disappointed that I‘m not able to install the brass fittings I purchased onto this and will have to resort to plastic. Although it is advertised as 1/8” NPT, it is most definitely not usable without further use of an NPT tap.

Johnathan R
May 31, 2020

Thought of sharing - Less than 20hours on this filter and I got mogas from a local esso gas station during a cross country flight. The filter clogged resulting in power loss on second takeoff. Filter looked clean visually but when taken out, I couldnt even blow through it. Looks like the ethanol in fuel melted and blocked the filter mesh. Switching to bronze filters for now.

August 31, 2018

I had this filter in my plane, engine was loosing power many times last year, I cleaned the filter every time and its looked clean, but at last I could not blow trhough it. I use mogas, last years ethanol has been increased in the fuel I changed to one with copper mesh and problem solved

January 9, 2023


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: P/n 1505826. -What fitting size fits into the end of this fuel filter? Is the screen element metal, plastic or paper?

The unit has female 1/8-NPT on each end to thread in the fittings. The screen frame looks to be plastic, but the screen itself looks to be a fabric mesh. The package does not identify the material of the filter.

Q: Is the external tube glass or plastic on this universal in-line fuel filter? Part # 15-05826

The external tube on this filter is glass.

Q: Can this filter be used firewall forward?

This universal in-line filter is for experimental use only and is not rated for firewall forward applications.

Q: What is the total length of this universal fuel filter including the 5/16 fittings?

The total length of this filter is 3-3/8".

Q: Part # 15-05826. Are the female ends truly 1/8 NPT? The ones sold at auto parts are 3/8-24 (not NPT).

Yes. They are 1/8 NPT.

Q: can this in line filter be used on inboard engines or just outboards

We do not have any data showing this for marine use. We supply it for aviation applications.

Q: What is the outer diameter for the filter?

1" od on the clear portion, 1-1/8" on the metal ends.

Q: Is the filter element reusable?

No the element is not replaceable.

Q: Where do I get the replacement filter elements?

The element is not replaceable, so you will need to purchase a new unit once it needs to be replaced.

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