Subaru 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.
PERRIN Alternator Pulleys weigh just 0.20 lbs., which is lighter than the OEM alternator pulley. Throttle response, horsepower, and torque are all increased with this easy-to-install part.
Designed to match the PERRIN Crank Pulley, the precision-machined grooves tightly sync with all OEM and aftermarket belts.
The PERRIN Alternator Pulley is machined from 6061T6 billet aluminum, anodized black, blue, or red, and laser etched for increased belt life and a precision fit.
PSP-ENG-121 = 2015-2022 WRX, 2021-2022 Legacy, 2021-2022 Outback, 2019-2022 Ascent, 2017-2022 Forester, 2014-2018 Forester XT, 2017-2022 Impreza, 2015-2022 Crosstrek
PSP-ENG-122 = 2022 BRZ & GR86
PSP-ENG-121 & PSP-ENG-122
PERRIN Performance warrants to the original purchaser that all PERRIN products will be free from defects in material and workmanship within a sixty (60) month period from the date of purchase. *Some exclusions apply
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