High-Flow Air Filter RacingLine VWR1141S4 for Audi S4 3.0T (B9)

The RacingLine High-Flow Panel Filter is a direct replacement for your original paper filter: no modification required, it fits into the original airbox and lets the engine breathe better. The simplest and most cost-effective way to improve airflow, without affecting the warranty.

Trifoam technology, as used in the intake kits

This filter uses exactly the same media as RacingLine intake kits: a triple-layer Trifoam foam, washable and reusable for life, which offers higher airflow than paper while providing excellent filtration. Hand-made in the UK, to the quality standards of an original part. An ideal complement to a stock engine as well as to an OEM+ Stage 1 ECU tune.

Technical specifications

• Triple-layer Trifoam foam, washable and re-oilable for life
• Direct replacement (drop-in) for the original paper filter, sealed polyurethane gasket
• Higher airflow: up to +15 Nm measured on a 1.4 TSI
• Hand-made in the UK, OEM quality

Frequently asked questions

Does the car need to be modified?

No, it is a direct replacement in the original airbox, with no cutting or specific tools required. It keeps an original-type fit and longevity.

Does it affect the warranty?

It is a warranty-friendly upgrade: a simple replacement filter, with no engine modification.

How do I maintain it?

Periodic cleaning and re-oiling with the RacingLine oil and cleaner kit (VWR120000). The filter lasts for life.

Specifications

Compatibility

Audi S4 3.0T (B9).