RF-1021 K&N Universal Clamp-On Air Filter
|Base Outside Length||5.875 in (149 mm)|
|Base Outside Width||5.875 in (149 mm)|
|Filter Material||Cotton Gauze|
|Flange Inside Diameter||4.5 in (114 mm)|
|Flange Length||0.625 in (16 mm)|
|Height||8 in (203 mm)|
|Top Outside Length||4.5 in (114 mm)|
|Top Outside Width||3.25 in (83 mm)|
|Top Material||Stainless Steel|
|Air Filter Shape||Oval Straight|
|Package Contents||1 Air Filter|
|Warranty||1 Year Limited|
|Product Style||Oval Tapered Universal Air Filter|
|Base Outside Diameter||5.87 in (149 mm)|
|Weight||1.6 lb (0.7 kg)|
|Filter Re-Oiling Amount||1.42 oz (42 ml)|
|Product Box Height||11 in (279 mm)|
|Product Box Length||6.38 in (162 mm)|
|Product Box Width||6.38 in (162 mm)|
Advanced Moderate Easy
50 years of improving vehicle performance.
Cold Air Intakes
Custom-engineered tubes deliver better airflow than you get with a stock intake. More air means better performance.
Using cotton gauze instead of typical folded paper, our filters increase airflow while providing excellent engine protection.
Cabin Air Filters
Helps capture most mold, mildew, fungus, spores, bacteria, germs, pollen and allergens, and helps to rid the air of unpleasant odors.
K&N oil filters use a high flow filter media that allows for high flow rates while providing outstanding engine protection.
From custom air filters to fuel pumps and carb accessories, the K&N Speed Shop has been assembled to help your vehicle run at peak performance.
Home Air Filters
New washable and reusable air conditioning and furnace filters for your home. From the industry leader in washable automotive filtration.
K&N is the home of the original red oiled air filter. In the early 1960s, two motorcycle racers, Ken Johnson and Norm McDonald (K&N), developed a ground-breaking new idea for an oiled air filter. Five decades later, K&N® is still innovating industry-leading filtration technology, and offers outstanding protection for everything from top-fuel dragsters to commuter vehicles across the globe. Thank you for helping us reach 50 years in business!