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RK-3947 K&N Intake System-Harley Davidson
Original price was: $299.99.$99.99Current price is: $99.99.
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The K&N RK-3947 High-Flow Air Intake System increases engine intake airflow and delivers more horsepower & torque to many Harley-Davidson FLT and FLH model motorcycles. The intake system increases power by eliminating the stock OE air cleaner and replacing it with a complete High-Flow Air Intake System. The intake system comes with a K&N air filter for high air flow and long service intervals. The K&N high-flow air filter is washable, reusable, pre-oiled and ready for installation.
- Guaranteed increase in horsepower
- Replaces the stock air filter and cleaner backing plate assembly
- Washable, oversized K&N high-flow air filter for long service interval
- Oversized black, powder coated aluminum backing plate provides solid mounting
- Dyno tuned velocity stack directs airflow to engine
- Built in breathers replace external OE breathers
- Includes K&N Million Mile Limited Warranty
| Estimated Horsepower Gain | 7.43 HP @ 4786 RPM |
|---|---|
| Overall Height | 2.125 in (54 mm) |
| Product Box Width | 9.5 in (241 mm) |
| Product Box Length | 11.75 in (298 mm) |
| Product Box Height | 4.88 in (124 mm) |
| Weight | 4.3 lb (2 kg) |
| Package Quantity | 1 |
| Top Material | Chrome |
| TUV Approved (Europe) | No |
| Replacement Filter | E-3975 |
| Street Legal In All US States | See Vehicle Applications |
| CARB EO Number | D-269-59 |
| Air Filter Height | 2.125 in (54 mm) |
| Product Style | Motorcycle Intake System |
| Warranty | No-Hassle Lifetime Limited |
| Air Filter Material | Cotton Gauze |
| Air Filter Color | Red |
| Mounting Hardware Included | Yes |
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