RK-3948B K&N Intake System-Harley Davidson
| Estimated Horsepower Gain | 6.84 HP @ 4812 RPM |
| Replacement Filter | E-3982 |
| Air Filter Color | Red |
| Air Filter Material | Cotton Gauze |
| Warranty | 1,000,000 Miles/10 Year |
| Product Style | Motorcycle Intake System |
| Air Filter Height | 2.188 in (56 mm) |
| CARB EO Number | D-269-60 |
| Street Legal In All US States | See Vehicle Applications |
| TUV Approved (Europe) | No |
| Overall Height | 2.281 in (58 mm) |
| Top Material | Aluminum |
| Weight | 5.4 lb (2.5 kg) |
| Product Box Height | 4.88 in (124 mm) |
| Product Box Length | 11.75 in (298 mm) |
| Product Box Width | 9.5 in (241 mm) |
| Mounting Hardware Included | Yes |
Warning: Cancer & Reproductive Harm – P65Warnings.ca.gov
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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