Displaying non-specific fit product (Universal).Note: This part may require customization to fit your vehicle.
view image gallery

K&NRF-1001 Universal Air Filter - Red, Cotton gauze, Oiled, Washable, Universal

Part #: K33RF1001 | Mfr #: RF-1001

In Stock
Ships out in 1-2 Business Days
  • APW Bestseller
  • Low Price Guarantee

5 5 out of 5 stars
(2 customer reviews)


List Price: $73.46

Save: $26.47



  • Overview
  • Manufacturer info
  • Related Products
  • Series: K&N Universal
  • Material: Cotton gauze
  • Type: Washable
  • Color/Finish: Red
  • Product Fit: Universal
  • Quantity Sold: Sold Individually
  • Shape: Oval Straight
  • Recommended Use: Performance
  • Style: Oiled
  • Anticipated Ship Out Time: 1-2 Business Days
  • Bottom Measurement: 7.75 in.
  • Dimensions: Base Inside Length: 7.75 in (197 mm); Base Outside Width: 5.5 in (140 mm); Flange Inside Length: 6.25 in (159 mm); Flange Length: 0.875 in (22 mm); Height: 5 in (127 mm); Top Outside Length: 6.25 in (159 mm); Top Outside Width: 4 in (102 mm)
  • Filtration Efficiency Rating: 96 to 99%
  • Height: 5 in.
  • Notes: Top: Stainless Steel; ; Centered Flange
  • Recommended Product: Air Filter Wrap - K33RF1001DL [Blue], K33RF1001DR [Red], K33RF1001DY [Yellow], K33RF1024DK [Black], K33RF1024DL [Blue], K33RF1024DR [Red], K33RF1024DY [Yellow], K33RF1001DK [Black]
  • Top Outside Diameter: 6.25 in.
  • Warranty: Million-mile K&N limited warranty

Product reviews

Good Air Filter for rigging by Will, October 5, 2008

Ease of Use/Installation:
Overall Rating:

The whole kit costs about 180.00$ Which I was not willing to pay for an air filter. So I bought JUST the filter and shoved the end of the filter onto the mass airflow sensor. Now this left me with holes, so I got some high temp silicon and filled in the holes around the sensor. Problem solved. Dont spend all that money on the air filter kit, when you can do-it-your self for 50$.

Excellent price by Max, August 19, 2008

Ease of Use/Installation:
Overall Rating:

This is exactly what I needed to replace my battered old one - but about 25% of the price I saw on other sites.