K&N Performance Air Intake System (57S-6200) Volkswagen > Golf > MK4 > R32 They have smaller foam cells

They have smaller foam cells

2 year warranty with no mileage limit to confirm high quality

x1 Forge Motorsport Sticker

Maintains proper alignment and steering geometry

BMW 420i(F32) 2

K&N Performance Air Intake System (57S-6200) Volkswagen > Golf > MK4 > R32 They have smaller foam cellsThe 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