Street Underdrive Kit With 6" Water Pump Pulley 20R/22R/RE/RET
Street vehicles running high RPM engines often overdrive the
water pump making the engine's cooling system inefficient. These
Crankshaft Power Pulleys reduce water pump and alternator RPM providing
better cooling and less power loss.
The light weight of these billet aluminum pulleys will reduce the drag on your engine, while the underdrive design will allow your engine to turn your front belt accessories with less effort. All this means you gain performance and a cleaner looking engine compartment.
Each 4" diameter Crankshaft Power Pulley is made from 6061 T-6 aluminum and is then hard anodized for extra wear resistance.
Another added benefit is the built in degree wheel on the front of the pulley that will allow you dial in your top dead center point much more accurately. Our Underdrive Kit for street applications includes a 6" polished billet water pump pulley, 4" crank underdrive pulley (your choice of single, dual, or triple, depending on your needs see below), adjustable timing tag, front balancer bolt and belt. For street applications running an alternator.
There are three pulleys to choose from.
Single groove would be a race application only running a alternator. With no power steering or other belt driven accessory.
Double groove would be used with alternator and A/C or custom belt accessory and no power steering.
Triple groove pulley would be used for running alternator A/C and power steering.
The stock belt line up is inner belt is water pump and alternator middle pulley is A/C and outer most pulley is power steering.
-Not recommended for low RPM applications such as rock crawling.
-For high RPM race applications see part #1016123 and #1016124.
Contact our Tech Support Line for further information at 928-855-6341.
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Note: Images are for illustration purposes only. Images MAY NOT represent the product listed. Please contact Customer Service with any questions or concerns: 928-505-2501.