Perrin [22-26 WRX] FA/FB Alternator Pulley - Black
Remove a future failure point and free up power with the PERRIN FA/FB alternator pulley in black — a precision-machined, lightweight replacement for the OEM clutch-style alternator pulley on the 2022-2026 WRX.
- PERRIN part number: PSP-ENG-121BK (Black)
- Replaces the OEM clutch-style alternator pulley, which can fail over time and cause knocking noises, battery charging issues, belt wear, and jumpy belts
- Weighs just 0.20 lbs — lighter than the OEM pulley for improved throttle response, horsepower, and torque
- Precision-machined grooves tightly sync with all OEM and aftermarket belts; designed to match the PERRIN crank pulley
- Machined from 6061 T6 billet aluminum with a black anodized finish, laser etched for increased belt life and a precision fit
Products received may vary slightly from images due to manufacturing tolerances or supply chain variables.
International Orders (Outside USA)
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