K&N Intake System-Harley Davidson (RK-3945)

K&N Intake System-Harley Davidson (RK-3945)K&N's Street Metal Series High Flow Air Intake Systems provide attractive styling, offer increased airflow and deliver more horsepower & torque to your Harley Davidson motorcycle. These air intake systems eliminate the stock OE air cleaner and replace it with a complete high flow air intake system to increase power. The sturdy, custom aluminum backing plate mounts directly to the throttle body via an aluminum integrated, internal run breather system.

Free-flowing aluminum tube

The 57-1570 air intake system comes with a K&N high-flow air filter and a heat shield that installs into the original air box space

Hose Adapter 3

The 1-1/2 inch diameter rubber flange is designed to push on and clamp directly on to metal or plastic tubing where venting is needed

valve cover or other assembly where used

Pliable rubber flanges absorb vibration

Washable and reusable performance lifetime air filter

Retains T-Rex eating a Raptor shroud graphic

57i Series Intakes are not legal for use in California and other US States adopting California emission standards

K&N's Metric Cruiser Complete Intake Assemblies are designed to provide increased horsepower and performance

K&N custom air cleaners are designed for use on older Harley-Davidson motorcycles

Specifically designed for custom applications