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The Perrin Alternator Pulley is a lightweight replacement alternator pulley finished in blue for Subaru WRX (2002–2005), STI (2004–2006) and Impreza (1993–2011) applications. It replaces the factory pulley to suit upgraded engine components and under‑hood styling. Its compact design preserves alternator fitment while offering a lighter alternative to stock pulleys.
PERRIN 02-05 Subaru WRX / 04-06 STI / 93-11 Impreza Lightweight Alternator Pulley - Blue
