Perrin Alternator Pulley Black 2006-2014 WRX / 2007-2021 STI / 2012-2016 Impreza / 2006-2013 Forester XT / 2005-2009 Legacy / 2004-2009 Outback

Upgrade your Subaru’s engine performance with the Perrin Alternator Pulley, designed for models including the 2006-2014 WRX, 2007-2021 Subaru WRX STI, 2012-2016 Impreza, and more. This premium pulley reduces rotational mass, allowing your engine to rev more freely and improve throttle response without compromising charging system reliability.

Crafted from precision CNC-machined 6061-T6 aluminum, the pulley is lightweight yet durable, featuring a hard anodized black finish for long-lasting protection. It directly replaces the factory steel pulley with no modifications or tuning required, making installation straightforward. Compatible with both OEM and aftermarket belts, it offers a subtle but effective performance boost ideal for track builds or daily driving.

Perfect for Subaru enthusiasts seeking reliable, high-quality drivetrain upgrades, the Perrin Alternator Pulley enhances engine efficiency while maintaining OEM functionality. Whether you’re upgrading your WRX, STI, Impreza, Forester XT, Legacy, or Outback, this pulley delivers trusted performance and durability.