Looking for a simple, warranty-friendly upgrade for your car?
Our High-Flow Panel Air Filters replace the restrictive factory paper filters with an improved, high flow and reusable triple-layer Trifoam® filter. Put simply, it’s the best Panel Air Filter you can buy.
OEM-standards of design, quality, materials and construction, hand-made in the UK. Fits like a factory part; lasts like a factory part.
Allow your engine to breathe better and operate more efficiently – improve the engine’s airflow, and power and fuel economy gains will follow.
By removing the inevitable restrictions that the standard paper panel filter gives, our Panel Filter allows a small but worthwhile increase in airflow through to the turbo.
![RacingLine High-Flow Panel Air Filter- Audi S4 3.0T B9 [VWR1141S4] 1 677af8 3ba0c8d948dd4f29a0c68e73e05746cd~mv2 d 5879 3924 s 4 2](https://static.wixstatic.com/media/677af8_3ba0c8d948dd4f29a0c68e73e05746cd~mv2_d_5879_3924_s_4_2.jpg/v1/fill/w_182,h_141,al_c,q_80,usm_0.66_1.00_0.01/677af8_3ba0c8d948dd4f29a0c68e73e05746cd~mv2_d_5879_3924_s_4_2.webp)
TRIFOAM® FILTER
Our unique Trifoam® filter construction allows us to sandwich three different foams together for the perfect filtration and minimum restriction.
![RacingLine High-Flow Panel Air Filter- Audi S4 3.0T B9 [VWR1141S4] 2 677af8 44f84aab93fa4120b422cdc4767f1836~mv2 d 6775 4522 s 4 2](https://static.wixstatic.com/media/677af8_44f84aab93fa4120b422cdc4767f1836~mv2_d_6775_4522_s_4_2.jpg/v1/fill/w_221,h_159,al_c,q_80,usm_0.66_1.00_0.01/677af8_44f84aab93fa4120b422cdc4767f1836~mv2_d_6775_4522_s_4_2.webp)
HAND-MADE IN UK
Each filter construction is hand-made in the UK for the reassurance of the highest quality together with exceptional dust-loading properties.
![RacingLine High-Flow Panel Air Filter- Audi S4 3.0T B9 [VWR1141S4] 3 677af8 06ae178b2ea24056bb4b5ebb1a4ce340~mv2 d 6853 4574 s 4 2](https://static.wixstatic.com/media/677af8_06ae178b2ea24056bb4b5ebb1a4ce340~mv2_d_6853_4574_s_4_2.jpg/v1/fill/w_206,h_129,al_c,q_80,usm_0.66_1.00_0.01/677af8_06ae178b2ea24056bb4b5ebb1a4ce340~mv2_d_6853_4574_s_4_2.webp)
EFFICIENCY GAINS
The result? More mid-range power and improved economy, without wrecking your warranty.
VWR1141S4



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