K&N Drop In Cold Air Filter for 04-06 Subaru Forester 9-3 2.0L/2.3L/2.5L 33-2337

K&N replacement air filters are designed to enhance horsepower and acceleration while maintaining superior filtration. We offer over 1,200 distinct replacement air filters for most vehicles on the road. These filters are washable, reusable, and custom-engineered to fit seamlessly into your existing factory air box. Their drop-in design ensures effortless performance enhancement. For most vehicles, simply remove the disposable air filter and replace it with a K&N. Refer to the applicable instruction sheet for detailed guidance. Our stock replacement air filters for street vehicles are backed by our renowned K&N Million-Mile Limited Warranty and will be the final air filter your vehicle will ever require. Experience a guaranteed increase in horsepower and torque with K&N cold air intake systems featuring mandrel-bent aluminum intake tubes. Each system is paired with a washable, reusable High-Flow Air Filter utilizing oiled cotton filter media. Some intakes may not be legally available or usable on any pollution-controlled motor vehicle in California. Consult the product specifications for CARB status on each part to determine its suitability for a specific vehicle.

Installation Instructions
Technical Bulletin

This Part Fits: