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Cold Weather Start Up: Ultra-fast cold weather start-up protection
Designed for applications without Active Fuel Management
Dyno-Proven Performance: Dyno-proven to deliver a guaranteed increase in horsepower and torque on your engine's stock tune
Heat treated and finished in a black oxide finish
33-2407 K&N Replacement Air Filter, 2007 - 2010 BMW X5 4.8L Microfibre and do I need toOVERVIEW K&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. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product! DETAILS ENGINEERED POWER: State of the art air filter media is designed to increase horsepower and acceleration as