

🛠️ Filter smarter, not harder — keep your engine breathing clean and winning.
The UNI Universal Filter Foam (12" x 24" x 3/8") is a coarse 30 PPI polyurethane foam designed for universal fit air filter applications. Easily cut to size, it replaces traditional paper filters with a reusable, oil-wetted foam that traps dirt, dust, and mud, ensuring superior engine protection. Lightweight and durable, it’s a top-rated choice among powersports enthusiasts and professionals seeking reliable filtration and long-term value.
| ASIN | B000ONZT5Y |
| Best Sellers Rank | #260,175 in Automotive ( See Top 100 in Automotive ) #756 in Powersports Air Filters |
| Brand | 4into1 |
| Brand Name | 4into1 |
| Customer Reviews | 4.7 out of 5 stars 401 Reviews |
| Fit Type | Universal Fit |
| Global Trade Identification Number | 00804451070342 |
| Included Components | Uni Filter BF-2 |
| Item Dimensions L x W x H | 24"L x 12"W x 0.38"H |
| Item Height | 0.38 inches |
| Item Type Name | Air Filters |
| Item Weight | 2.56 ounces |
| Manufacturer | 4into1 |
| Manufacturer Part Number | BF-2 |
| Manufacturer Warranty Description | Manufacturer |
| Model Number | BF-2 |
| OEM Equivalent Part Number | BF-2 |
| OEM Part Number | BF-2 |
| Product Dimensions | 24"L x 12"W x 0.38"H |
| Product Grade | Replacement Part |
| UPC | 804451070342 |
| Unit Count | 1.0 Count |
D**H
Perfect for venting a string trimmer! Kept grass and dirt away from the motor
Perfect for putting behind the vent slots of a string trimmer. I think it saved the motor, which was burning up when it got grass in it.
B**D
Quality.
Just what you need for making filters to fit almost anything
R**E
Good replacement for late 90s and early 2000s ski doo air filters. Just cut to side.
Tracking broken, but I did receive item on time. Worked as hood and air intake air filters on my 1999 Ski-Doo, thanks!
J**R
Works well for what I want.
Use this with a portable AC to help filter the air going through the chill side to keep down on dust collecting. Sure it has an air filter, but, it's one of those nylon-mesh filters and this is much more thorough; without being restrictive....and washable.
S**N
Used in Cascade 1000 Canister Filter For Aquariums.
I use this for a filter media in my Cascade 1000 Canister Filter. I just cut up a few to the size of the canister and wash them out when needed. It has added a low cost 30 ppi filter media to my fish tank. Mine did not have any oils in it when I got it. I have ordered foams that had oil in them so I was worried at first. They are a dry filter when you get them. I washed the heck out of it before hand just in case. I can several filters from this one foam and save myself tons of bucks. So far, in the last 8 months I have only used one..I just keep cleaning it and returning it to my filter system so this should last me a great while. I hope this helps someone. Happy Shopping & Money Saving!!
M**H
Perfect for preventing a light leak in a vintage camera
I purchased this to prevent a potential light-leak in a vintage medium-format camera. I was able to cut out a rectangular frame of 9 cm x 6 cm on the outside and 8.5 cm x 5.5 cm on the inside. The softness and firmness was perfect for me. It fit well beneath the pressure plate of the camera. Being black, this should do a perfect job of blocking any light that might leak into the camera through the red windows at the back. The material is very similar to the foam brushes available at most stores. I bought this because I needed something a little larger than what was available locally.
R**.
General purpose filter foam
Great, used it for air blower exhaust silencer. Works great. Low air resistance and heat resistant.
S**Y
Good material reusable for the job!
I use this for air cleaner on my 1983 Suzuki tempter gr650. I've been unable for years to find OEM air cleaner material. This is the next best thing. Fabricate and able to substitute original. Not perfect but it will get you down the road. Get outside enjoy life.
Trustpilot
2 weeks ago
1 month ago