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66-1540 K&N Oval Air Filter Assembly
Air Filter Color | Red |
Air Filter Material | Cotton Gauze |
Air Filter Height | 4 in (102 mm) |
Air Filter Inside Diameter | 8.125 in (206 mm) |
Air Filter Shape | Oval |
Inlet Diameter | 5.125 in (130 mm) |
Mounting Hardware Included | Yes |
Overall Height | 5 in (127 mm) |
Replacement Filter | E-3504 |
Style | Oval |
Top Material | Aluminum |
Top Style | Aluminum - Scalloped Design |
Warranty | 1 Year Limited |
Product Style | Custom Assemblies |
Size | 10-12 |
Height | 4 in (102 mm) |
Base Outside Diameter | 11.5 in (292 mm) |
Top Outside Diameter | 8.13 in (207 mm) |
Weight | 7.9 lb (3.6 kg) |
Product Box Height | 6.13 in (156 mm) |
Product Box Length | 15.75 in (400 mm) |
Product Box Width | 9.88 in (251 mm) |
Inner Wire | No |
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K&N Products
Unmatched Performance
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.

Air Filters
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.

Oil Filters
K&N oil filters use a high flow filter media that allows for high flow rates while providing outstanding engine protection.

Speed Shop
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.

FUEL FILTERS

CLEANING KITS

HD DIESEL

POWERSPORTS
OUR STORY
WHY K&N?
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!
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