Racingline Drop In High Flow Air Filter for B9 Audi S4/S5 | VWR1141S4

Enhance the performance of your B9 Audi S4, S5, or SQ5 with the RacingLine Drop-In High-Flow Air Filter, engineered to increase airflow, improve throttle response, and optimize fuel efficiency. This direct-fit OEM replacement is a simple yet effective upgrade that delivers real performance gains without voiding your warranty.

Why Upgrade to the RacingLine High-Flow Air Filter?

• Increased Airflow & Power – Replaces the restrictive factory paper filter with a high-flow, reusable Trifoam filter, allowing your 3.0 TFSI turbocharged engine to breathe more efficiently.
• Dyno-Tested Gains – Proven to deliver an additional 20Nm of torque, improving mid-range power and overall driving performance.
• Advanced Trifoam Filtration – Features triple-layer polyurethane foam, ensuring maximum filtration with minimal airflow restriction—the same technology used in Formula 1 engines.
• Improved Fuel Economy – Optimized airflow results in better combustion efficiency, helping to enhance fuel mileage.
• OEM-Quality Fit & Finish – Handcrafted in the UK to factory standards, featuring a precision-engineered plastic mount for a perfect seal and long-lasting durability.

Direct Fit, Maximum Performance

The RacingLine Air Filter is a simple drop-in replacement that fits seamlessly into your factory airbox—no tuning required. Its non-sealed end and larger surface area significantly boost airflow compared to stock, unlocking a more responsive and enjoyable driving experience.

This part also goes by the following cross reference.

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