| 98-02 LS1 March Performance Dampener Pulley. Unlike some weaker designed pulleys the fluid dampened design will not cause spark sensors to retard timing with resultant loss in power. Dyno tested at 12H.P. gain. S.F.I. Approved.
When replacing the crankshaft pulley on an LS1, a new GM crank bolt is required. This is due to that bolt being a torque-to-yield bolt; meaning that it can only safely be used once. This bolt is sold seperatly and is available in a drop-down menu below if you would like one included with your order.
Also available to help with installation of the crank pulley is the longer crank pulley bolt. Click HERE to read more.
Please contact us for current shippng time. | 
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