Now there is FINALLY a better solution for replacing the OEM Alternator Belt tensioning setup.
Now there is FINALLY a better solution for replacing the OEM Alternator Belt tensioning setup.
NOT an under drive pulley, reduces rotational mass of stock pulley system.
10X Entries Into Our F80 M3 Sweepstakes
This product was last offered at the strikethrough price on
05-02-2026
A new washer and nut to install your pulley
For use with Bosch style alternators
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
08-31-2026
A new washer and nut to install your pulley
For use with Valeo style alternators
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
09-06-2026
A new washer and nut to install your pulley
10X Entries Into Our F80 M3 Sweepstakes
For use with Bosch style alternators
This product was last offered at the strikethrough price on
05-02-2026