K&N Air Filters

K&N high-flow performance air filters for improved induction sound and airflow. Washable, reusable and built for long-term performance.

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Air Filters | ECU Tuning | bootmod3 | Frequently Bought Items

FAQs
Do K&N filters improve performance?

They improve airflow and throttle response, especially on turbocharged engines.

Are K&N filters reusable?

Yes — they can be cleaned and re-oiled instead of replaced.

Will a K&N filter make my BMW louder?

It may increase induction sound slightly, especially under load.

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9 products

Save £20.00
K&N Performance Panel High-Flow Air Filter – BMW B58 (G2x/G42 M240i, M340i, M440i)
K&N
K&N Performance Panel High-Flow Air Filter – BMW B58 (G2x/G42 M240i, M340i, M440i) Sale price£66.00 Regular price£86.00
Save £16.00
K&N Performance Panel High-Flow Air Filter – BMW M2C, M3 F80 & M4 F82/F83
K&N
K&N Performance Panel High-Flow Air Filter – BMW M2C, M3 F80 & M4 F82/F83 Sale price£133.00 Regular price£149.00
N55 Stage 1 Tune Package
Track Warrior Mods
N55 Stage 1 Tune Package Sale priceFrom £449.00
B58 Stage 1 Tune Package
Track Warrior Mods
B58 Stage 1 Tune Package Sale priceFrom £455.00
S55 Stage 1 Tune Package
Track Warrior Mods
S55 Stage 1 Tune Package Sale priceFrom £499.00
S58 Stage 1 Tune Package
Track Warrior Mods
S58 Stage 1 Tune Package Sale priceFrom £519.00
Save £15.00
K&N Performance Panel High-Flow Air Filter – BMW M3 G80 & M4 G82/G83
K&N
K&N Performance Panel High-Flow Air Filter – BMW M3 G80 & M4 G82/G83 Sale price£133.00 Regular price£148.00
Save £13.00
K&N Performance Panel High-Flow Air Filter – BMW B58 (F2x/F3x)
K&N
K&N Performance Panel High-Flow Air Filter – BMW B58 (F2x/F3x) Sale price£66.00 Regular price£79.00
Save £13.00
K&N Performance Panel High-Flow Air Filter – BMW N55 (M135i, M2, M235i, 335i, 435i)
K&N
K&N Performance Panel High-Flow Air Filter – BMW N55 (M135i, M2, M235i, 335i, 435i) Sale price£66.00 Regular price£79.00
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