Perrin Alternator Pulley Blue 2002-2005 WRX / 2004-2006 STI / 1993-2011 Impreza / 1998-2010 Forester / 2000-2004 Outback

Upgrade your Subaru’s engine response with the Perrin Alternator Pulley in blue, designed for WRX, Subaru WRX STI, Impreza, Forester, and Outback models spanning 1993 to 2011. This lightweight pulley reduces rotational mass, allowing your engine to rev more freely and deliver quicker throttle response without compromising charging reliability.

Crafted from precision CNC-machined 6061-T6 aluminum with a durable anodized finish, the Perrin Alternator Pulley offers a premium alternative to the heavier OEM steel pulley. It installs easily as a direct replacement with no modifications or tuning needed and is compatible with both OEM and aftermarket belts. Built to withstand daily driving and track conditions, it’s a reliable upgrade for Subaru enthusiasts seeking subtle but effective performance gains.

Ideal for drivers who want a smooth, responsive engine feel without complex installs, this pulley enhances your Subaru’s performance while maintaining durability. Upgrade your setup today and experience the difference in every drive.