Perrin Performance Alternator Pulley for Subaru WRX/STI/Impreza Lightweight B...

Perrin Performance Lightweight Alternator Pulley for Subaru WRX / STI / Impreza Brand: Perrin Performance Replace your factory alternator pulley with this precision-engineered lightweight pulley designed for Subaru WRX (2002–2005), STI (2004–2006) and Impreza (1993–2011). Finished in durable black, it reduces rotational mass to improve throttle response and accessory drive efficiency. Direct fit: Designed to match OE dimensions for a hassle-free installation. Lightweight construction: Lowers rotational inertia for crisper engine response and reduced parasitic loss. Durable finish: Anodized black coating resists corrosion and wear. Improved efficiency: Optimizes alternator speed under load for better electrical performance at higher RPMs. Quality assurance: Manufactured to Perrin Performance standards for fit, form and function. This pulley is ideal for enthusiasts seeking subtle performance gains, improved throttle feel and reliable daily driving. Professional installation recommended. Check compatibility with your exact model year and engine before purchase.