Perrin Alternator Pulley Blue 2022-2025 BRZ / 2022-2025 GR86

Upgrade your Subarus engine efficiency and performance with the PERRIN Alternator Pulley. Crafted from precision-machined 6061-T6 aluminum, this lightweight pulley reduces rotational mass compared to the OEM steel unit, allowing your engine to rev more freely and respond quicker.

Designed as a direct replacement for the factory pulley, installation is simple and requires no additional modifications. Whether you're building for the track or enhancing your daily driver, the PERRIN Alternator Pulley delivers a subtle yet effective performance boost while maintaining full charging system functionality.

Features:

• CNC-machined 6061-T6 aluminum construction
• Durable anodized finish in signature PERRIN colors
• Reduces rotational mass for improved throttle response
• Direct fit – no tuning or modifications required
• Compatible with OEM and aftermarket belts

Installation Instructions