BPS Underdrive Alternator Pulley (2011-2017 Mustang GT)
$59.00
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Spinning your alternator passed the factory limit often leads to failure. Extend your alternators life by reducing its maximum RPM while maintaining sufficient charge at idle. Our 15% underdrive alternator pulley will help keep the rpms within a more reasonable range when spinning past the factory limiter. Our pulleys are CNC machined from billet 6061 aluminum and are hard black anodized for a durable finish. *Includes replacement nut *Requires larger belt, part number: JK6847-B
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