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This PERRIN lightweight alternator pulley is specified for 2006–2014 Subaru WRX, 2007–2021 STI, and 2006–2013 Forester models and is shown in blue. The product listing highlights model-year compatibility and the lightweight pulley form factor as a replacement option, keeping the emphasis on correct fit and finish rather than extrapolated performance benefits.
PERRIN 06-14 Subaru WRX / 07-21 STI / 06-13 Forester Lightweight Alternator Pulley - Blue
