Perrin [02-05 WRX, 04-06 WRX STI, 93-11 Impreza, 98-10 Forester, 00-09 Outback, 00-09 Legacy] Alternator Pulley Blue

The PERRIN Lightweight Alternator Pulley replaces the heavy OEM steel alternator pulley with a CNC-machined aluminum pulley that decreases rotational weight for improved throttle response, horsepower, and torque.

• Part number: PSP-ENG-118BL (Blue)
• CNC-machined 6061-T6 billet aluminum with a blue anodized finish; laser etched for belt life and a precision fit
• Weighs only 0.116 lbs vs the 0.393 lb OEM pulley; precision-machined grooves sync with OEM and aftermarket belts
• Designed to match the PERRIN Crank Pulley; easy bolt-on installation
• Box contents: (1) PERRIN Alternator Pulley, warranty & instructions