The aFe Stage 2 Si Cold Air Intake System includes both the Pro 5R oiled filter, and the Pro Dry S non-oiled filter, allowing you decide which filter type you want to run in your 335i. Increase your 335i's horsepower and torque by replacing your existing stock intake with an aFe Stage 2 Si Intake System.
About AFE Filters: AFE filters are constructed from 100% polyurethane which makes them very durable, and resistant to high temperatures and chemicals. The construction of the pleats in the filter is deeper than that of any other filter, this provides for an increased flow and prevents a greater amount of dust from reaching your engine.
Durable construction
Deep pleats for increased filtration
Washable/re-useable
Benefits:
14 horsepower gain (dyno below)
27 Ft./lbs of torque gain (dyno below)
Improved throttle response
Washable/reusable filters
Installs in less than 60 minutes and uses factory mounting points