K&N Air Filter Foam Wrap (25-5167) Mercedes > B-Class W246 (2011-2018) > B200 These are only recommended if

These are only recommended if you want to stiffen the standard bushes slightly and the original bushes are in good condition

3 x M6 x 6 Grub Screws

with all three cores having different internal and external fin pitches and configurations

alongside the usual daily and spirited driving

please select your choice using the options above

K&N Air Filter Foam Wrap (25-5167) Mercedes > B-Class W246 (2011-2018) > B200 These are only recommended ifThe 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