Perrin [22-26 WRX] FA/FB Alternator Pulley Blue | PSP-ENG-121BL Car Stereo Systems Supports high-performance fuel delivery requirements

Supports high-performance fuel delivery requirements

Whether you’re building a track-ready WRX or enhancing your street car’s stability

and more precise gear engagement under load—ideal for high-performance street or track builds

Lexus IS300 / Altezza AS300

Featuring (2) Silicone O-rings and special grease

Perrin [22-26 WRX] FA/FB Alternator Pulley Blue | PSP-ENG-121BL Car Stereo Systems Supports high-performance fuel delivery requirementsPREVENT 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