K&N Engineering Drop-In Air Filter

Part #: 33-2367

Overview

The K&N Engineering Drop-In Air Filter is a high-performance replacement designed to optimize the airflow within your vehicle's intake system. Crafted specifically for BMW models equipped with the 3.0L L6 engine from 2006 to 2009, including the 135i, 335i, and 535i, this filter offers an easy upgrade to enhance your driving experience. Its primary benefits include improved throttle response, increased airflow, and the potential for modest gains in horsepower and torque, supporting your vehicle’s overall performance and efficiency. This filter is ideal for enthusiasts seeking a reliable, reusable upgrade that maintains OEM fitment while delivering enhanced airflow characteristics.

Key Features

This drop-in air filter is engineered with high-quality, durable materials designed for long-lasting performance. Its open, multilayer cotton media provides superior filtration while maximizing airflow, helping your engine breathe more freely. The filter’s custom design ensures a precise fit for your specific BMW model, making installation straightforward without the need for modifications. Its washable and reusable construction allows for easy maintenance, providing ongoing performance benefits over the lifespan of the filter. The high-flow design supports improved engine response and efficiency, making it a practical upgrade for daily driving or spirited performance.

Construction & Design

The filter features a multilayer cotton gauze media encased in a durable, epoxy-coated aluminum wire mesh, combining strength with optimal airflow. Its precise manufacturing process ensures a snug fit and consistent filtration performance, helping to protect your engine from dirt and debris while supporting maximum airflow.

Driving Feel & Feedback

By increasing the volume of air entering your engine, this filter helps improve throttle response and overall engine responsiveness. While it does not directly alter horsepower figures, the enhanced airflow can contribute to a more engaging driving experience, especially during acceleration and spirited driving.

Installation & Fitment

Installation is simple and requires no special tools or modifications. The filter is designed as a direct replacement for the factory unit, fitting seamlessly into your vehicle’s intake system. Verify fitment against your specific BMW model and engine to ensure compatibility.

What’s Included

The package includes one high-performance K&N Drop-In Air Filter, ready to install in your compatible BMW model, providing a maintenance-free upgrade that supports your vehicle’s airflow needs.