Releases horsepower by underdriving the water pump and alternator. When used with our 7" Underdrive Water Pump Pulley, it reduces the water pump speed to 57% of the crank speed allowing the water/ coolant to absorb more temperature from the engine
Description: All Esslinger underdrive crank pulleys are made from lite-weight hard anodized 6061 aluminum
V-belt pulleys feature 360 degree laser etched degree markings make setting ignition timing easy using our supplied timing pointer
Our V-belt pulleys work well with: Esslinger 7" Water Pump Pulley, an Esslinger Billet Hi-Volume Water Pump, and a water neck w/ 5/8" I.D. restrictor
Use Continental V-belt # 15301) when using these 4" crank pulleies with our 7" waterpump pulley. With a stock water pump pulley and this 4" crank pulley, you'll want to use Continental V-belt # 15276. If you are running an alternator and/ or power steering, you'll have to measure your belt path and find a belt at your local parts store.
