IPD 997.1 Carrera S 3.8L 74mm Plenum ('05-'08) (97174-3.8) 1809 The dimple drilled rotor was

The dimple drilled rotor was invented by EBC back in the 90's and has been imitated by many because of its ability to offer pad degassing without “Through Drilling” disc or rotor holes which has been shown to promote rotor cracks

Built In Radiator Stays (much cleaner look than competing products)

engineered to provide lightweight durability and enhanced styling

having an accurate velocity profile at the sensor is the only way to accurately measure airflow

IPD 997.1 Carrera S 3.8L 74mm Plenum ('05-'08) (97174-3.8) 1809 The dimple drilled rotor wasWorks with Factory 74mm Throttle Body The 997 marked Porsche's return to the round headlights and curvaceous fenders reminiscent of the 993 and earlier era Carreras. Although the 997's picturesque styling is another milestone in Porsche design history there is still room for improvement in the engine performance department. The IPD "Y" design plenum replaces the factory "T" style air distributor and provides substantial power and torque gains by means