Sturdy, custom aluminum backing plate mounts directly to the throttle body via an aluminum integrated, internal-run breather system. Intake system comes with a K&N air filter for high air flow and long service intervals. The filter is washable, reusable, pre-oiled and ready for installation. Durable mounting gasket is also included to help absorb vibration. Simple designed custom covers give this air intake good looks while powering down the highway or at your local show. Fits 99-12 Twin Cam without Throttle by Wire (exc. 08-12 FLH, FLT). Note: Excludes Twin Cam engines with Magnetti-Morelli fuel injection systems.