Skip to Main Content Skip to Footer Links
Error occured! Please reload the page and try again
Choose a Store
Open till 
There are vehicles in your garage

Free shipping on orders over $35.

Enroll in Speed Perks for more savings.

Cart is empty!

Add Something to the cart

includes estimated shipping

Vehicle added


Find parts for the selected vehicle:

View Vehicles
Are you sure you want to delete this vehicle?

    Add a

    Add a

    K&N Air Filter Foam Wrap

    Loading ...
    Warranty Information
    • Product Details

      Part No. 25-3900


      The K&N Airforce Pre-Cleaner is a specially designed foam filter wrap made to extend the service interval of your K&N air filter when used in very dusty conditions. The Airforce Pre-Cleaner is designed to be cleaned with K&N Cleaner or soap & water. Red colored Airforce pre-cleaners air oiled with K&N air filter oil after they are cleaned. They are made from large, open cell foam. Gray colored Airforce pre-cleaners do not use oil. They have smaller foam cells.

      Product Features:

      • Extends service interval of your filter in very dusty conditions
      • Large open cell foam construction stops 90% of dirt with very low air restriction
      • Cleanable with K&N Filter Cleaner or soap and water
      • This product wraps your air filter with an additional pre-filter

    • Specifications
      • Color:Black
        Weight:0.2 lb
        Filter Material:Cotton Gauze
        Oil Included:No Filter Oil Required
        Filter Material:Cotton Gauze
    • Read Review
    • Q & A