Kawasaki KLX400R Premium Air Filter - ProFilter - PRF - `03-`04. This genuine ProFilter premium air filter is offered as a direct-fit replacement for the 2003–2004 Kawasaki KLX400R (and KLX400SR) models to maintain proper intake protection and serviceability.

The ProFilter PRF unit is manufactured for riders who want a reliable, replacement filter that matches factory dimensions and mounting points. It simplifies routine maintenance and helps ensure the engine breathes through a correctly sized, purpose-built element. The compact design makes installation straightforward with standard tools and retains the original airbox geometry.

Features

• Fitment: 2003–2004 Kawasaki KLX400R / KLX400SR
• Brand: ProFilter (PRF series)
• Direct-fit replacement for the stock air filter
• Constructed to match factory mounting and sealing points

This description aims to give you the facts so you can choose the right part for your build or maintenance plan. If you have questions about fitment, installation, or part numbers, please call us directly — we’re happy to help. We have two locations offering installation and customization services: Austin, Texas and the Los Angeles, California area. Call 512-982-9393 (TX) or 562-981-6800 (CA) for assistance or to book service.

If you are considering purchasing multiple items, contact us for possible shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov