Perrin Alternator Pulley Blue (PSP-ENG-118BL) | Subaru WRX 2002-2005 / STI 2004-2006 / Impreza 1993-2011

The Perrin Alternator Pulley Blue offers reduced rotating weight and a bright blue accent, improving accessory drive efficiency and engine response on early Impreza, WRX, and STI platforms.

KEY FEATURES

• Billet aluminum pulley for weight reduction
• Blue anodized finish for a custom engine bay appearance
• Helps the engine rev more freely
• OEM-size diameter preserves proper alternator speed
• Direct bolt-on upgrade for compatible Impreza-based models

VEHICLE FITMENT

• Subaru WRX (2002–2005)
• Subaru STI (2004–2006)
• Subaru Impreza (1993–2011, select models)

Perrin products are engineered for precision Subaru performance and long-term reliability.