K&N Replacement Air Filter (33-2339) BMW M3/G80 PFR57-830 Rear Top Mount Isolator

PFR57-830 Rear Top Mount Isolator Bush is a direct replacement for the OE foam isolator

Lowers your VW ID

It is the same part as the Black Series but with Road Series packaging

This Forge Motorsport valve relies on an internal spring in order to maintain a seal so that you have boost pressure when it is needed

Gains of 8bhp (see description for more information)

K&N Replacement Air Filter (33-2339) BMW M3/G80 PFR57-830 Rear Top Mount IsolatorK&N washable, reusable High Flow Air Filters feature a state of the art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's No Hassle Lifetime Limited Warranty. K&N drop in replacement filters are designed to install easily into your