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435i xDrive
mandrel-bent pipes
With a lightweight and track-focused design
We take pride in delivering only the highest quality products to our valued customers
External reservoirs allow increased oil capacity and thermal stability
K&N BMW 2-3-4 Series N20 Engine Performance Air Intake System - 57S-2001 Water Meth Components 435i xDriveThe K&N Performance Airbox is designed to dramatically reduce air flow restriction as well as smooth and straighten air flow. Replacing the restrictive factory air filter and air box allows your engine to inhale more air than with the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. A fully enclosed injection molded air box connects to the factory air intake hose. The removable lid
