K&N Performance Air Intake System (57S-7070) Audi > S5 > B9 OEM Part Number: 25111221830

OEM Part Number: 25111221830

Featuring a sleek and durable design

IMPROVED ENGINE SOUND - HEAR THE GROWL: K&N’s intake systems allow your engine to breathe and sound as it should- your engine will growl on acceleration and return to quiet once at speed

OEM Part Number: 1K0411303AQ

K&N Performance Air Intake System (57S-7070) Audi > S5 > B9 OEM Part Number: 25111221830K&N 57i Generation II Induction Kits are built primarily for European vehicles. They come with K&N's No Hassle Lifetime Limited Warranty. These intake kits use only non metallic rotationally molded tubes that can reduce air temperature and decrease intake sound over a metal tube. Restriction can exist BETWEEN an air filter and the engine reducing the benefit of a K&N Air Filter alone. The weakest link in the airflow chain robs a vehicle of its natural