---
product_id: 49380722
title: "K&N 33-2231 Replacement Air Filter, Heather Red"
brand: "k&n"
price: "$158.13"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/49380722-k-and-n-33-2231-replacement-air-filter-heather-red
store_origin: US
region: United States of America
---

# Boosts engine performance Reusable & eco-friendly Precision-machined fit K&N 33-2231 Replacement Air Filter, Heather Red

**Brand:** k&n
**Price:** $158.13
**Availability:** ✅ In Stock

## Summary

> 🔥 Elevate your BMW’s breathability and performance — don’t get left behind!

## Quick Answers

- **What is this?** K&N 33-2231 Replacement Air Filter, Heather Red by k&n
- **How much does it cost?** $158.13 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/49380722-k-and-n-33-2231-replacement-air-filter-heather-red)

## Best For

- k&n enthusiasts

## Why This Product

- Trusted k&n brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Lightweight & Durable:** Weighs just 349g with robust construction for long-lasting use
- • **Eco-Conscious Reusability:** Washable and reusable filter reduces waste and saves money
- • **Tailored for BMW L6 Models:** Perfectly engineered for 1996-2007 BMW 325Ci, M3, X3, and more
- • **Precision Machined Exterior:** Ensures a seamless, OEM-quality fit every time
- • **Performance-Enhancing Design:** Optimizes airflow to unlock your engine’s true potential

## Overview

The K&N 33-2231 Replacement Air Filter is a precision-machined, reusable air filter designed specifically for select 1996-2007 BMW L6 models. Weighing 349 grams and measuring 25.1 x 19.38 x 4.6 cm, it offers enhanced airflow for improved engine performance while providing a durable, eco-friendly alternative to disposable filters.

## Description

33-2231 Replacement Air Filter, Heather Red

## Features

- K&N 33-2231 Replacement Air Filter
- K&n
- 33-2231 good

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | K&N |
| Brand | K&N |
| Model | 1996-2007 BMW L6 (325Ci, M3, X3, 320Ci, 320i, 325Ti and other select models) |
| Product Dimensions | 25.1 x 19.38 x 4.6 cm; 348.81 g |
| Item model number | 33-2231 |
| Exterior | Machined |
| Manufacturer part number | 33-2231 |
| OEM Part Number | 13721730946, 13721744869 |
| Item Weight | 349 g |

## Product Details

- **Brand:** K&N
- **Product dimensions:** 25.1L x 19.4W x 4.6H centimetres
- **OEM part number:** 13721730946, 13721744869
- **Global Trade Identification Number:** 00024844092304
- **Shape:** Panel

## Images

![K&N 33-2231 Replacement Air Filter, Heather Red - Image 1](https://m.media-amazon.com/images/I/61QYYMcbYjL.jpg)

## Questions & Answers

**Q: Will it fit an E46 M3?**
A: No, I think you will need part number K&N 33-2231, but you should check the KN website first

**Q: will it fit a 330CI 99 to 06 model?**
A: Yep that's what i have soft top 330ci 05

**Q: Will it fit bmw e36 compact 1.9**
A: Don't know tbh. I know it fits the M3

**Q: Does this fit bmw e46 318i 1999 ??**
A: No i dint think it will  fit the 318i

## Frequently Bought Together

- K&N Engine Air Filter: Increase Power & Acceleration, Washable, Premium, Replacement Car Air Filter: Compatible with 1996-2007 BMW L6 (325Ci, M3, X3, 320Ci, 320i, 325Ti & other select models), 33-2231
- BOSCH C3640WS Activated Charcoal Workshop Cabin Air Filter - Compatible with Select BMW 320i, 323Ci, 323i, 325Ci, 325i, 325xi, 328Ci, 328i, 330Ci, 330i, 330xi, M3, X3, Z3
- K&N Premium Oil Filter: Protects your Engine: Compatible with Select BMW/LAND ROVER/FORD/VOLVO Vehicle Models (See Product Description for Full List of Compatible Vehicles), HP-7007

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**Shop now:** [https://www.desertcart.us/products/49380722-k-and-n-33-2231-replacement-air-filter-heather-red](https://www.desertcart.us/products/49380722-k-and-n-33-2231-replacement-air-filter-heather-red)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-21*