PERRIN Lightweight Alternator Pulley - Black 2006-2014 Subaru WRX / 2007-2021 STI / 2006-2013 Forester

PERRIN 06-14 Subaru WRX / 07-21 STI / 06-13 Forester Lightweight Alternator Pulley - Black

Matching our signature Crank Pulley design, the PERRIN Alternator Pulley decreases rotational weight while maintaining good looks.

Decrease Rotational Mass

PERRIN Alternator Pulleys weigh just 0.116 lbs., which is lighter than the OEM alternator pulley. Throttle response, horsepower, and torque are all increased with this easy-to-install part.

Design

Designed to match the PERRIN Crank Pulley, the precision-machined grooves tightly sync with all OEM and aftermarket belts.

Construction & Finish

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.

Prevent Future Failure

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.

Explain Like I’m 5

The PERRIN Alternator Pulley is a lighter, stronger pulley that helps your engine respond quicker and make more power. It replaces the factory pulley that can fail over time, giving you better reliability and a cleaner look.