--- product_id: 471267556 title: "Uni Filter BF1 12\" X 16\" X 5/8\" 65-PPI Green Fine Foam" brand: "4into1" price: "€ 110.83" currency: EUR in_stock: false reviews_count: 5 category: "4into1" url: https://www.desertcart.hr/products/471267556-uni-filter-bf1-12-x-16-x-5-8-65 store_origin: HR region: Croatia --- # 12x16x5/8 inch versatile size 65 PPI ultra-fine foam Hi-flow air filtration Uni Filter BF1 12" X 16" X 5/8" 65-PPI Green Fine Foam **Brand:** 4into1 **Price:** € 110.83 **Availability:** ❌ Out of Stock ## Summary > 🟩 Elevate your engine’s breathability with precision foam filtration! ## Quick Answers - **What is this?** Uni Filter BF1 12" X 16" X 5/8" 65-PPI Green Fine Foam by 4into1 - **How much does it cost?** € 110.83 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/471267556-uni-filter-bf1-12-x-16-x-5-8-65) ## Best For - 4into1 enthusiasts ## Why This Product - Trusted 4into1 brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Durable & Lightweight:** Robust polyurethane foam weighing just 0.05 lbs for easy handling - β€’ **Custom Fit Flexibility:** Perfectly sized 12" x 16" x 5/8" sheet for tailored applications - β€’ **Precision Engine Protection:** Keeps out dirt, dust & mud with advanced foam filtration - β€’ **Maximized Airflow Efficiency:** Hi-flow green foam ensures superior engine breathing - β€’ **Trusted Quality & Performance:** 4.7-star rated with 750+ reviews, made in the USA ## Overview The Uni Filter BF1 is a 12" x 16" x 5/8" green fine foam sheet featuring 65 pores per inch for superior air filtration and flow. Designed for custom applications, this lightweight polyurethane foam filter protects engines by trapping dirt, dust, and mud effectively. Made in the USA and highly rated by users, it’s a trusted choice for ATV and motorcycle air filtration needs. ## Description Uni filter ATV air filters keep out all the dirt, dust, and mud providing superior engine protection. The principle of how foam air filters work is simple, open cell polyurethane foam is wetted with specially developed filter oil. The sticky filter oil. Review: Decent quality i suppose Review: Great alternative when nothing else is available ## Features - Hi-Flow Green Filter Foam Sheet - 12 Inches x 16 Inches x 5/8 Inch - Unlimited Potential for Use in Custom Applications - Excellent Air Flow and Filtration - Sold Per Sheet ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000ONZT5E | | Best Sellers Rank | #450,694 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #1,469 in Motorcycle & ATV Air Filters | | Brand | 4into1 | | Brand Name | 4into1 | | Country of Origin | USA | | Customer Reviews | 4.7 out of 5 stars 750 Reviews | | Fit Type | Vehicle Specific Fit | | Global Trade Identification Number | 00804451070335 | | Item Dimensions L x W x H | 40.6L x 30.5W x 1.5H Centimeters | | Item Weight | 0.05 Pounds | | Manufacturer | Uni Filter | | Manufacturer Part Number | 82-0001 | | Model | BF-1 | | OEM Equivalent Part Number | BF-1 | | OEM Part Number | BF-1 | | Product Dimensions | 40.6L x 30.5W x 1.5H Centimeters | | Product Grade | Tuning | | UPC | 804451070335 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** 4into1 - **Fit Type:** Vehicle Specific Fit - **OEM Part Number:** BF-1 - **Product Dimensions:** 40.6L x 30.5W x 1.5H Centimeters - **Product Grade:** Tuning ## Images ![Uni Filter BF1 12" X 16" X 5/8" 65-PPI Green Fine Foam - Image 1](https://m.media-amazon.com/images/I/91ZLhKILzXL.jpg) ## Questions & Answers **Q: what adhesive is best for creating motorycle air filters?** A: I use brushed on contact cement for the initial adhesion, then put a bead of silicone all around the seam, about 1/2 inch wide both inside and out. I do not trust just the contact cement to hold foam together long term, but it works great to hold the two ends together while the stronger silicone has a chance to cure. I do not glue the foam to the metal frame. I simply glue the foam together and slide it over whatever filter frame you are using. **Q: I have a Honda gyro scooter, the old filter looks to be about 3/8 to 1/2 inch thick, will this be too thick for it?** A: It is made from foam and will squish to make it fit. I put this foam in my cars to be a pre-cleaner to keep the paper air filter super clean. It works exceptionally well. The fit is a little tight sometimes, because space under the bottom of a flat type air filter can be limited. But, the foam sheet is soft enough to squish down underneath and work just fine. Most of the time I can only use 1 layer of foam. Once I tried to roll it up in a ball and stuff it into a round tube intake hose that led to the air filter itself. The multiple layers in the ball caused a check engine light to come on with an "intake restriction" code. So I took it out and just left the flat piece of foam in the air filter box. I also put some air filter oil massaged into the foam. It helps collect fine dust, and you wash it out and re oil it about every 20k miles. This keeps the paper flat filter clean as new for 50k miles or more. I went 100k miles in an old 1990 big Chevy Van and the paper filter stayed completely clean. I used foam over the air cleaners in all my tractors and dirt bikes and motorcycles. The paper filters were useless without the foam covers. The foam ones on the bikes would never plug up, even when they were covered with mud and dust. It has to do with the foam flexibility and larger pores in the foam and thicker layer of foam than the thin layer of paper. When you use foam, the engine will run cleaner and last longer, due to fewer bits of abrasive dust grinding away pistons and cylinders. Combine that by using Mobil 1 synthetic oil and changing it every 3000 miles, and your car will last for 300,000 miles. I ran an Acura Integra 300,000 rough miles doing that, and then sold it for $700 because it still ran like new! **Q: will this work on weber carbs** A: I used it on a snowmobile air intake. We cut to fit. Works good. I don't know about Weber carbs, sorry. **Q: Would this foam filter matierial work well in regular vehicles? Using on an inline 2.0L turbo.** A: I think it would work well assuming it fits snug. Please note it needs to be oiled to provide proper filtration. My application was for a mower. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Decent quality i suppose *by T***W on 10 February 2026* ### ⭐⭐⭐⭐⭐ Great alternative when nothing else is available *by A***R on 31 October 2025* ### ⭐⭐⭐⭐⭐ Good quality *by R***L on 27 June 2025* ## Frequently Bought Together - Uni Filter - BF-1 BF1 12" X 16" X 5/8" 65-PPI Green Fine Foam - UNI Filter Foam Filter Oil (1) - UNI Universal Filter Foam - 12" x 24" x 3/8" - Black --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/471267556-uni-filter-bf1-12-x-16-x-5-8-65](https://www.desertcart.hr/products/471267556-uni-filter-bf1-12-x-16-x-5-8-65) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-23*