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The PERRIN lightweight alternator pulley in blue is a direct-fit upgrade for certain Subaru models, listed for 2015–2025 WRX, 2015–2022 Crosstrek and 2014–2018 FXT applications. It reduces rotational mass at the alternator pulley to alter accessory drive characteristics while installing as a vehicle-specific replacement pulley for the listed Subaru model years and applications.
PERRIN 15-26 Subaru WRX / 15-22 Crosstrek / 14-18 FXT Lightweight Alternator Pulley - Blue
