| Year | Make | Model |
|---|---|---|
| 2002 - 2008 | Audi | A4 Base |
| 2003 - 2009 | Audi | A4 Cabriolet |
| 2002 - 2008 | Audi | A4 Quattro Avant |
| 2002 - 2008 | Audi | A4 Quattro Base |
| 2004 - 2009 | Audi | A4 Quattro Cabriolet |
| 2007 - 2008 | Audi | RS4 Base |
| 2008 | Audi | RS4 Cabriolet |
| 2004 - 2008 | Audi | S4 Avant |
| 2004 - 2008 | Audi | S4 Base |
| 2004 - 2009 | Audi | S4 Cabriolet |
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K&N Engineering Drop In Air Filter: Audi A4 2001 - 2009 / RS4 2001 - 2009 / S4 2001 - 2009
K&N Engineering Drop In Air Filter: Audi A4 2001 - 2009 / RS4 2001 - 2009 / S4 2001 - 2009
SKU:33-2209
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Regular price
$57.22 USD
Regular price
$68.99 USD
Sale price
$57.22 USD
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â–¶ Vehicle Fitments
The K&N Engineering Drop In Air Filter is a high-performance replacement component designed to improve airflow to the engine of select Audi models. Crafted for enthusiasts seeking enhanced engine breathing and efficiency, this universal fit filter offers increased airflow capacity, durable construction, and straightforward installation. Made from high-quality materials, it is engineered to deliver improved filtration and long-lasting performance, contributing to better engine response and power output.
This drop-in filter is compatible with 2001 to 2009 Audi A4, RS4, and S4 models. It serves as a direct replacement for the stock air filter, ensuring a hassle-free upgrade without modifications. Ideal for street and performance driving, this filter enhances engine performance while maintaining ease of maintenance. The kit includes the filter itself, designed for quick installation and reliable operation across a range of vehicle configurations within the specified model years.
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Overview
Overview
K&N Engineering Drop In Air Filter
Part #: 33-2209
Overview
The K&N Engineering Drop In Air Filter is a high-performance replacement filter designed to enhance airflow to your vehicle’s engine. Crafted for enthusiasts seeking improved engine breathing and efficiency, this filter is suitable for a range of vehicles, including the Audi A4, RS4, and S4 from 2001 to 2009. Its primary benefits include increased airflow capacity, durable construction, and ease of installation, making it an ideal upgrade for drivers aiming to optimize their vehicle’s performance without complex modifications. This drop-in filter is engineered to provide a reliable, long-lasting solution that supports your vehicle’s engine response and overall efficiency. It’s designed to fit directly into the stock air box, offering a simple upgrade that can help improve throttle response and potentially support better fuel economy over time.Key Features
The K&N Drop In Air Filter combines advanced materials and thoughtful design to deliver consistent performance and durability. Key features include:- High-flow cotton media for superior airflow and filtration
- Reinforced epoxy-coated frame for structural integrity
- Washable and reusable design for long-term use
- Engineered to meet or exceed OE filtration standards
- Easy installation with no modifications required
- Designed to support engine response and efficiency
Construction & Design
This air filter features a high-quality, layered cotton media that is pleated to maximize surface area for airflow and filtration. The durable epoxy-coated frame ensures a precise fit within the stock air box, maintaining a tight seal to prevent unfiltered air from bypassing the filter media. Its washable design allows for easy cleaning and reuse, providing a cost-effective and environmentally friendly upgrade.Installation & Fitment
Installation is straightforward, requiring only removal of the existing filter and placement of the K&N filter into the stock air box. No additional tools or modifications are necessary, making it a convenient upgrade for DIY enthusiasts and professional technicians alike.What’s Included
The package includes one K&N Drop In Air Filter, designed to fit the specified vehicle models and years, with no additional hardware required.