K&N Air Filter Foam Wrap (25-3770) Audi > A4 > (B9.5) 2021-2025 > 2.0 TSI - This is an insert

- This is an insert that fits into and fills voids in the original rubber bush in lower engine mount OE part numbers: 8200042454

Can handle pressures of 30psi - 120psi

The pipe to the filter is hand fabricated and features a precision machined MAF boss so that the cars original MAF can simply be bolted on to the new intake

the ECM must be reprogrammed with a tune optimised for atmospheric discharge

We estimate that it will take around 4 hours to complete installation of this product

K&N Air Filter Foam Wrap (25-3770) Audi > A4 > (B9.5) 2021-2025 > 2.0 TSI - This is an insertThe K&N Airforce Pre Cleaner is a specially designed foam filter wrap made to extend the service interval of your K&N air filter when used in very dusty conditions. The Airforce Pre Cleaner is designed to be cleaned with K&N Cleaner or soap & water. Red colored Airforce pre cleaners are oiled with K&N air filter oil after they are cleaned. They are made from large, open cell foam. Gray colored Airforce pre cleaners do not use oil. They have smaller