K&N Engineering Replacement Air Filter

Part #: 33-3155

Overview

The K&N Replacement Air Filter is designed to provide a high-performance, reusable filtration solution for a variety of BMW models. Crafted with premium materials, this air filter helps improve airflow to your engine, supporting optimal combustion and engine response. Its durable construction ensures long-lasting performance, making it an ideal upgrade for enthusiasts seeking to enhance their vehicle’s efficiency and responsiveness. Whether you're looking to boost your daily driver’s performance or improve the longevity of your stock filter, this product offers a reliable and maintenance-friendly option that maintains factory-like filtration standards while promoting better airflow.

Key Features

This K&N air filter features a high-flow design that supports improved engine breathing. Constructed from multiple layers of oiled cotton media, it provides excellent filtration while minimizing airflow restriction. The filter’s rugged, washable, and reusable design allows for easy cleaning and reinstallation, reducing ongoing costs and waste. Its precision-engineered frame ensures a secure fit and seal, preventing unfiltered air from bypassing the filter. Designed to withstand harsh conditions, this filter maintains performance over extended service intervals, helping your engine operate at peak efficiency.

Construction & Design

The filter’s multi-layer cotton media is oiled for optimal filtration and airflow. The durable, epoxy-coated aluminum wire mesh provides structural integrity and corrosion resistance. The high-quality rubber sealing edges ensure a tight fit within the stock air box or intake system, preventing leaks and unfiltered air entry.

Installation & Fitment

Installation is straightforward and requires no special tools. Simply remove the existing filter and replace it with the K&N unit, ensuring proper seating for an airtight seal. Compatibility varies across BMW models, so verify fitment with your specific vehicle using the part number provided.

What’s Included

The package includes one high-performance, reusable air filter designed to fit multiple BMW models, along with installation instructions.

Ideal For

This product is perfect for BMW owners seeking to improve engine airflow, response, and efficiency without sacrificing filtration quality. It’s an excellent upgrade for daily drivers, performance enthusiasts, and those looking to reduce long-term maintenance costs.