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E36 Underdrive Pulley Kit

Engineered not only to be the best pulley kits on the market, but to provide the best compromise between performance and reliability for your BMW! Specifically, we have designed them to underdrive the water pump, power steering pump and alternator*. It is not safe to change the crank pulley due to the potential harm to the crank. These kits provide 10%-20% overall reduction in driving your car's systems!

*Alternator pulleys - we offer two kits, one for the performance minded individual and one for the serious audiophile. If you have a significant additional load on the alternator from aftermarket audio amplifiers, you will not want to underdrive the alternator. Thus, we simply lighten that pulley rather then underdrive it.
Upon checkout, please verify type of alternator.
Was: $459.99
Sale: $379.99


Fits E36 323/325/328/M3


Professional installation recommended.


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  • $9.99