---
product_id: 173913957
title: "Uni Filter - BF-1 BF1 12\" X 16\" X 5/8\" 65-PPI Green Fine Foam"
brand: "4into1"
price: "€ 68.83"
currency: EUR
in_stock: true
reviews_count: 5
category: "4into1"
url: https://www.desertcart.fi/products/173913957-uni-filter-bf-1-bf1-12-x-16-x-5
store_origin: FI
region: Finland
---

# 12" x 16" x 5/8" precise fit 65 PPI ultra-fine foam Hi-flow open cell design Uni Filter - BF-1 BF1 12" X 16" X 5/8" 65-PPI Green Fine Foam

**Brand:** 4into1
**Price:** € 68.83
**Availability:** ✅ In Stock

## Summary

> 🟩 Keep your engine breathing clean, or risk falling behind!

## Quick Answers

- **What is this?** Uni Filter - BF-1 BF1 12" X 16" X 5/8" 65-PPI Green Fine Foam by 4into1
- **How much does it cost?** € 68.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/173913957-uni-filter-bf-1-bf1-12-x-16-x-5)

## 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

- • **Durable & Reliable:** High-quality polyurethane foam ensures long-lasting engine protection
- • **Trusted by Enthusiasts:** Proven OEM-style foam rebuilds filters for vintage and modern rides
- • **Custom Fit, Unlimited Uses:** Sized 12" x 16" x 5/8" for versatile, vehicle-specific applications
- • **Optimized for Easy Maintenance:** Wets perfectly with filter oil for superior sticky filtration
- • **Engineered for Peak Performance:** 65 PPI fine foam traps dirt & dust without sacrificing airflow

## Overview

The Uni Filter BF-1 is a 12" x 16" x 5/8" green fine foam air filter sheet with 65 pores per inch, designed for high airflow and superior dirt trapping. Made from durable open-cell polyurethane foam, it’s ideal for custom vehicle-specific applications, providing reliable engine protection and easy maintenance with filter oil. Highly rated by users for quality and versatility, it’s a must-have for keeping engines running clean and efficient.

## 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: I am happy with the product. The quality is great and the shipping was fast, it worked perfectly for my 40 year old motorcycle. There was enough to make 3 air filters. 👍👍
Review: good OEM style foam to rebuild steel cage filters with!

## Features

- Hi-Flow Green Filter Foam Sheet
- 12 Inches x 16 Inches x 5/8 Inch
- Unlimited Potential for Use in Custom Applications
- Fit type: Vehicle Specific

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000ONZT5E |
| Best Sellers Rank | 356,231 in Automotive ( See Top 100 in Automotive ) 2,500 in Car Air Engine Air Filters |
| Brand | 4into1 |
| Customer Reviews | 4.7 4.7 out of 5 stars (746) |
| Date First Available | 27 Feb. 2012 |
| Exterior | Painted |
| Item Weight | 22.7 g |
| Item model number | BF-1 |
| Manufacturer | Uni Filter |
| Manufacturer part number | 82-0001 |
| Model | Uni Filter 82-0001 |
| OEM Part Number | BF-1 |
| Product Dimensions | 40.64 x 30.48 x 1.47 cm; 22.68 g |

## Product Details

- **Brand:** 4into1
- **Fit type:** Vehicle Specific Fit
- **OEM part number:** BF-1
- **Product dimensions:** 40.6L x 30.5W x 1.5H centimetres
- **Product grade:** Performance Part

## Images

![Uni Filter - BF-1 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

### ⭐⭐⭐⭐⭐ Review
*by A***E on 9 June 2024*

I am happy with the product. The quality is great and the shipping was fast, it worked perfectly for my 40 year old motorcycle. There was enough to make 3 air filters. 👍👍

### ⭐⭐⭐⭐⭐ Review
*by A***R on 31 October 2025*

good OEM style foam to rebuild steel cage filters with!

### ⭐⭐⭐⭐⭐ Review
*by A***R on 21 May 2020*

Bought it for my motorcycle to replace the original paper filter. Cut it to shape but haven't installed yet as I'm waiting for my paper filter to get a bit dirtier before switching over, but the foam seems to be of great quality! I think it will definitely help my engine filter better with a good foam oil.

## 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

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-14*