Performance Air Filter for Audi RS6 C6 5.0 TFSI V10 (2008-2010)

Optimizing the V10 Biturbo: BMC High-Flow Intake Upgrade for the Audi C6 RS6 (BUH Engine)

Who It’s For: Engineered for the Audi RS6 owner running the legendary 5.0L TFSI V10 powerplant who demands better volumetric efficiency without compromising engine safety.

The Symptom: The factory induction system on the BUH-coded V10 is a marvel of engineering, but it is ultimately limited by standard paper filtration. These OEM filters are designed for service intervals and noise suppression rather than maximum flow. In a twin-turbocharged environment, restrictive paper elements create a pressure drop across the filter, forcing the turbos to work harder and generate more heat to meet target boost levels.

This results in a slight hesitation in throttle snap and a loss of potential power at the top of the RPM range.

The Engineering Fix: This BMC replacement filter kit utilizes a multi-layered cotton gauze media, treated with low-viscosity oil to capture impurities as small as 7 microns—significantly tighter than the 10-micron industry standard for paper. By utilizing a "Full Moulding" production process, the filter features a continuous perimeter with no welded joints, ensuring a perfect seal within the C6 airbox.

This creates a streamlined, laminar airflow path that reduces turbulence and allows the V10 to breathe more naturally under heavy load.

Why Mechanics Choose This Kit

• Enhanced Filtration Surface: Provides a 3-micron improvement over OEM standards, ensuring that even microscopic debris stays out of your turbo compressors.
• Laminar Flow Dynamics: The epoxy-coated alloy mesh and cotton design reduce air resistance, allowing for faster turbo spool-up and improved throttle response.
• Lifetime Durability: Unlike disposable paper filters, this unit is fully washable and regenerable, designed to outlast the vehicle itself when maintained correctly.

Technical Specifications

Compatibility & OEM Reference

Fits the following vehicles (BMC fitment data):

• Audi A6 (4F/C6) 5.0 V10 RS6 Tfsi [Full Kit] (580 HP) | 2008-2010

BMC marks these applications as [Full Kit]. The package contains 2 filters.

OEM Cross Reference (BMC): VW GROUP 07L133843, 07L133844F

The Performance Promise

Buy with confidence. As tuners, we know that the C6 RS6 is a sensitive platform. This BMC filter is the exact same technology used by Formula 1 teams to ensure maximum airflow without risking internal engine wear. Backed by real automotive experts and fast shipping.

Common Questions

Which Audi does it fit?
BMC lists the C6 Audi RS6 5.0 V10 TFSI (580 HP), 2008-2010, as a full kit of 2 filters.

Is it a direct fit?
Yes. It replaces the factory element (2 filters per kit) in the stock airbox with no modifications.

Can I clean and reuse it?
Yes. Wash and re-oil it with a BMC regeneration kit.

How fine is the filtration?
The multi-layer oiled cotton traps particles down to 7 microns.

What will I notice after installing it?
Sharper throttle response and a stronger intake sound.