---
product_id: 165614556
title: "Uni Filter BF-2 12\" X 24\" X 3/8\" 30-PPI Black Coarse Foam"
brand: "4into1"
price: "¥17800"
currency: JPY
in_stock: false
reviews_count: 6
category: "4into1"
url: https://www.desertcart.jp/products/165614556-uni-filter-bf-2-12-x-24-x-3-8
store_origin: JP
region: Japan
---

# Durable polyurethane foam for long-lasting use Customizable 12" x 24" sheet for tailored fit 30-PPI coarse foam for max debris blocking Uni Filter BF-2 12" X 24" X 3/8" 30-PPI Black Coarse Foam

**Brand:** 4into1
**Price:** ¥17800
**Availability:** ❌ Out of Stock

## Summary

> 🛠️ Upgrade your ride’s breathability with precision-cut protection!

## Quick Answers

- **What is this?** Uni Filter BF-2 12" X 24" X 3/8" 30-PPI Black Coarse Foam by 4into1
- **How much does it cost?** ¥17800 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/165614556-uni-filter-bf-2-12-x-24-x-3-8)

## 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

- • **Tailor-Made Fit:** Easily cut and shape the 12" x 24" sheet to fit vintage or custom air filters perfectly
- • **Engine Armor in Foam:** 30-PPI open cell foam traps dirt & mud before they reach your engine
- • **Lightweight & Durable:** Weighs just 72.6g but built to withstand tough off-road conditions
- • **Sticky Oil Compatibility:** Designed to hold specialized filter oil for superior particle capture
- • **Vintage Vibes, Modern Protection:** Ideal for classic cars and ATVs needing authentic yet effective filtration

## Overview

The Uni Filter BF-2 is a 12" x 24" x 3/8" sheet of 30-PPI black coarse polyurethane foam designed for fabricating custom air filters. Perfect for vintage and custom applications, it traps dirt, dust, and mud effectively when combined with specialized filter oil, ensuring superior engine protection for ATVs and classic vehicles.

## 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: One Star - FINALLY arrived thanks.
Review: I used this product as a replacement air filter on carburetor filters on a vintage car. I was able to cut strips and form inside the metal canisters for SU carburetors. I am confident this will be an excellent replacement.

## Features

- Sheets of foam for fabricating air filters
- Perfect for vintage and custom applications
- Uni Filter

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000ONZT5Y |
| Brand | 4into1 |
| Customer Reviews | 4.6 4.6 out of 5 stars (390) |
| Date First Available | 10 Nov. 2012 |
| Item Weight | 72.6 g |
| Item model number | BF-2 |
| Manufacturer | 4into1 |
| Manufacturer part number | BF-2 |
| OEM Part Number | BF-2 |
| Product Dimensions | 60.96 x 30.48 x 0.97 cm; 72.57 g |

## Product Details

- **Brand:** 4into1
- **Fit type:** Universal Fit
- **OEM part number:** BF-2
- **Product dimensions:** 61L x 30.5W x 1H centimetres
- **Product grade:** Replacement Part

## Images

![Uni Filter BF-2 12" X 24" X 3/8" 30-PPI Black Coarse Foam - Image 1](https://m.media-amazon.com/images/I/91rLlymnrDL.jpg)

## Questions & Answers

**Q: Will sound pass through well? I'm looking for a replacement foam speaker cover (intercom). Currently it's 3/4" to 1" thick (could be less thick).**
A: read previous answer. Media will pass air for cooling circulation, and would pass sound as well. How well it would pass sound, I can't determine from my application.

**Q: is anyone using this as PC dust filters? saw same product on youtube and guy said it was not affecting air flow?**
A: Yes, on the air intake for a rack mounted power amp. It works well.

**Q: When you hold this 30 ppi filter up to the light, can you see through it? thank you.**
A: I can see specs of light through it, but I cannot see what is on the other side. It is opaque but lets specs of light through.

**Q: Would this work for my ventless whirlpool dryer bottom filter?**
A: That's a question to ask a Whirlpool dealer.

## Customer Reviews

### ⭐ One Star
*by N***E on 1 November 2016*

FINALLY arrived thanks.

### ⭐⭐⭐⭐⭐ Review
*by A***R on 7 August 2020*

I used this product as a replacement air filter on carburetor filters on a vintage car. I was able to cut strips and form inside the metal canisters for SU carburetors. I am confident this will be an excellent replacement.

### ⭐⭐⭐⭐⭐ Review
*by P***E on 13 October 2020*

Did the job at a tenth of the price we were quoted by other companies.

## Frequently Bought Together

- UNI Universal Filter Foam - 12" x 24" x 3/8" - Black
- Uni Filter - BF-1 BF1 12" X 16" X 5/8" 65-PPI Green Fine Foam
- UNI Filter Foam Filter Oil (1)

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**Shop now:** [https://www.desertcart.jp/products/165614556-uni-filter-bf-2-12-x-24-x-3-8](https://www.desertcart.jp/products/165614556-uni-filter-bf-2-12-x-24-x-3-8)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-19*