Perrin [22-26 WRX] FA/FB Alternator Pulley Blue | PSP-ENG-121BL Car Stereo Systems this system is engineered for

this system is engineered for durability while reducing unnecessary weight

Polished aluminum finish

The integrated urethane base flange clamps straight to your intake tubing

The PERRIN Exhaust systems come with a brushed stainless steel finish featuring TIG welding for precise

Perrin [22-26 WRX] FA/FB Alternator Pulley Blue | PSP-ENG-121BL Car Stereo Systems this system is engineered forPREVENT FUTURE FAILURESubaru models with OEM clutch style alternator pulleys may fail over time. This failure can lead to knocking noises, battery charging issues, belt wear, and cause belts to become extra jumpy. The PERRIN Alternator Pulley removes this future failure point. DECREASE ROTATIONAL MASSPERRIN Alternator Pulleys weigh just 0. 20 lbs., which is lighter than the OEM alternator pulley. Throttle response, horsepower, and torque are all