For use with 16% Pulley System: Supercharger Pulley
This product was last offered at the strikethrough price on
05-07-2026
For use with 16% Pulley System: Supercharger Pulley
This product was last offered at the strikethrough price on
05-07-2026
Main drive belt that connects to the main pulley
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6PK-1374 : Alternator / Water Pump : For John Cooper Works kit
This product was last offered at the strikethrough price on
02-01-2026
For Boost Upgrade System: Dinan Pulley Installed
Main drive belt that connects to the main pulley
6PK-1388 : Alternator / Water Pump : Not for models with John Cooper Works kit
For use with a 4% crank pulley on stock Cooper S supercharger pulley
Main drive belt that connects to the main pulley
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We Price Match - Give Us A Call or Chat!
6PK-1374 : Alternator / Water Pump : For John Cooper Works kit