K&N Performance Air Intake System (57-9027) BMW > 3 Series > E90/E91/E92/E93 Coupe/Convertible/Saloon/Estate 2004-2013 > 335D 2006-2013 (N57) The inlet and outlet sizes

The inlet and outlet sizes have both been increased in diameter

As with all Forge Motorsport products it includes a full set of comprehensive installation instructions to make fitting as straightforward as possible

We used SolidWorks CAD

Silicone tubing with an internal diameter of 8mm

K&N Performance Air Intake System (57-9027) BMW > 3 Series > E90/E91/E92/E93 Coupe/Convertible/Saloon/Estate 2004-2013 > 335D 2006-2013 (N57) The inlet and outlet sizesThe K&N 57 9027 FIPK air intake system replaces the restrictive factory air filter and air intake tubing in some Toyota Tundra and Sequoia models. K&N intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow. This allows your engine to inhale a larger amount of air than the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. The 57 9027 air