K&N Engineering Replacement Air Filter

1991–1999 BMW 325td / 325tds 2.5L Diesel L6

Part #: 33-2706

Overview

The K&N Engineering Replacement Air Filter for the BMW 325td and 325tds is designed to deliver superior airflow and filtration for your diesel engine. Crafted specifically for models from 1991 to 1999 with a 2.5L L6 turbo-diesel engine, this high-performance filter ensures your vehicle maintains optimal intake efficiency. Whether you're a daily driver seeking improved engine response or a performance enthusiast aiming for enhanced power delivery, this filter provides a reliable upgrade over the factory component.

Built with K&N's renowned quality standards, this filter helps support increased horsepower and torque by allowing more air to flow into your engine while maintaining excellent filtration. Its durable construction ensures long-lasting performance, reducing the need for frequent replacements and helping you save on maintenance costs. With a straightforward installation process, you'll get a performance boost without the hassle of complex modifications.

Key Features

This replacement air filter incorporates several advanced features to optimize your vehicle's performance:

• High-flow cotton media with multiple layers for maximum airflow and filtration efficiency.
• Replaces the factory paper filter with a washable, reusable design, promoting sustainability and cost savings over time.
• Engineered with a durable, epoxy-coated aluminum wire mesh to protect the cotton media and maintain shape during installation and use.
• Designed specifically for the 2.5L diesel engine, ensuring a perfect fit and seal for optimal performance.
• Provides a significant increase in airflow compared to OEM filters, supporting improved throttle response and engine efficiency.
• Manufactured with high-quality materials resistant to dirt, dust, and engine contaminants, ensuring long-term reliability.
• Backed by K&N's Million Mile Limited Warranty, guaranteeing quality and performance for the life of your vehicle.

Filter Options

The 33-2706 is a high-performance, oiled cotton media filter designed for enthusiasts who want maximum airflow and filtration. Its washable and reusable design makes it ideal for those who prefer a sustainable, long-term solution. Regular cleaning and re-oiling will maintain peak performance, ensuring your engine breathes freely and stays protected.

Construction & Design

This K&N replacement filter features a one-piece, high-quality cotton media layered with multiple pleats to maximize surface area. The cotton is oiled during manufacturing to enhance filtration efficiency and airflow. The filter's epoxy-coated aluminum wire mesh provides structural integrity and resistance to corrosion, ensuring durability under demanding driving conditions. Its precise dimensions and sealing surface guarantee a secure fit in the factory air box, preventing unfiltered air from bypassing the filter.

Installation & Fitment

The installation process is straightforward and requires no special tools. Simply remove the factory filter and replace it with the K&N filter, ensuring proper seating and sealing. No cutting, drilling, or tuning is necessary, making it a hassle-free upgrade for your BMW 325td or 325tds. Regular cleaning and maintenance will keep the filter performing at its best for up to 50,000 miles under normal driving conditions.

• Easy bolt-in replacement for the factory filter
• No modifications or tuning required
• Designed for quick installation and removal

What's Included

• One K&N Replacement Air Filter (Part # 33-2706)
• Installation instructions

Ideal For

• BMW 325td / 325tds owners seeking improved airflow and filtration
• Performance enthusiasts aiming for better engine response and efficiency
• Drivers looking for a durable, reusable air filter with long-term cost savings