Performance Air Filter for Audi A6 RS6 (1997-2006) 4.2L XSARA (2002-2004)

High-Flow Air Filtration for Audi 4.2L Biturbo V8 and PSA Engine Families

Who It’s For: Designed specifically for owners of the Audi RS6 (C5) and a wide range of Citroën and Peugeot vehicles running the BCY, TU, and EW engine families who want better throttle response and a reusable filtration solution.

The Problem: The Audi 4.2L Biturbo V8 and the high-revving PSA engines are often restricted by standard paper filters. These OEM filters are designed for low production costs, not maximum air velocity. In high-output applications like the RS6, paper media can struggle to provide the volume of air needed during peak boost, while the smaller TU and EW engines suffer from sluggish throttle response due to restrictive factory pleats.

The Solution: This BMC performance filter replaces your restrictive factory element with a multi-layered cotton gauze media. By utilizing a "Full Moulding" system, we provide a filter with no welded joints, preventing structural failure under high vacuum. This design allows for a filtration level of 7 microns (compared to 10 microns for OEM), ensuring your engine breathes cleaner, colder air without the turbulence associated with cheap paper replacements.

Why This is the Ultimate Upgrade

• Enhanced Air Velocity: The epoxy-coated alloy mesh and low-viscosity oil coating allow air to pass through the media with significantly less resistance than factory paper.
• Lifetime Durability: Unlike disposable filters, this unit is washable and regenerable. It is built to outlast the vehicle, saving maintenance costs over the long term.
• Precision Fitment: Engineered with high-adhesion rubber, this filter creates an airtight seal within the factory airbox, ensuring no "dirty air" bypasses the filtration media.

Technical Specifications

Compatibility & OEM Reference

Fits the Following Vehicles:

• Audi A6 (4B/C5) 4.2 V8 RS6 (2002-2004) - [Note: 2 Filters Required]
• Audi A6 (4B/C5) 4.2 V8 RS6 PLUS (2004) - [Note: 2 Filters Required]
• Citroën Berlingo I (MF) 2.0 HDI (2003-2006)
• Citroën Xsara / Break / Coupé 1.4 I (1997-2005)
• Citroën Xsara / Break / Coupé 1.6 I 16V (2000-2005)
• Citroën Xsara / Break / Coupé 2.0 HDI 90 (2000-2005)
• Citroën Xsara / Break / Coupé 2.0 I 16V (2000-2005)
• Citroën Xsara Picasso 1.6 (2000+)
• Citroën Xsara Picasso 1.6 Chrono (2001-2004)
• Citroën Xsara Picasso 1.8 I 16V (2000+)
• Citroën Xsara Picasso 2.0 HDI (2000+)
• Citroën Xsara Picasso 2.0 I 16V (2003+)
• Peugeot 206 / CC / SW 1.1 XR / XT (1998+)
• Peugeot 206 / CC / SW 1.4 XR / XT / XS (1998+)
• Peugeot 206 / CC / SW 1.6 16V (2001-2003)
• Peugeot 206 / CC / SW 1.6 XS (1998+)
• Peugeot 206 / CC / SW 1.9 D (1998+)
• Peugeot 206 / CC / SW 2.0 16V RC (1999-2003)
• Peugeot 206 / CC / SW 2.0 GTI 16V (1999+)
• Peugeot 206 / CC / SW 2.0 HDI (1999+)

Interchange & Engine Code Reference:

BCY, BRV, DW10TD, RHY, KFW, TU3JP, KFX, NFU, TU5JP4, RFN, EW10J4, NFZ, TU5JP, NFV, 6FZ, EW7J4, LFY, XU7JP4, HFX, TU1JP, HFZ, WJZ, DW8, RFK, EW10J4S, 4BBCYF, 4B, MF, MFRHY, N1, N2, N0, N68, 20A/C, 2D, 2E/K

The Performance Promise

Buy with confidence. As specialists in European performance, we know that the BCY V8 and the PSA EW series engines rely on consistent airflow for thermal management and power delivery. This filter is a direct-fit upgrade that maintains factory tolerances while improving efficiency. Backed by real automotive experts and fast shipping.