Perrin Red EJ Alternator Pulley 2007-2021 STI

Constructed from high-quality materials, the PERRIN Alternator Pulley mimics the signature Crank Pulley design while reducing rotational weight. At just .116lbs, it is noticeably lighter than the OEM alternator pulley, freeing up engine power and improving throttle response, horsepower, and torque. A simple installation process makes this part perfect for 2007-2021 Subaru WRX STI models.