This 100mm billet idler pulley is designed to replace the factory idler pulley located directly beneath and to the left of the supercharger pulley.
In CTS-V or ZL1 applications using a smaller than stock supercharger pulley, belt slippage at higher engine speeds can reduce both boost and power. The larger diameter of this pulley serves to increase belt wrap at the supercharger pulley, as well as increase tension on the supercharger belt. This pulley is an easy bolt-on solution to troublesome belt slippage.
* This replaces the idler pulley in the upper position of the idler pulley bracket
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New Era Performance branded products carry a limited lifetime warranty on craftsmanship unless otherwise specified. Warranty claims on all other products should be directed to the original manufacturer of that product.
Returns are accepted within 30 days of original purchase. Items must be unopened, uninstalled and in original packaging. A 20% re-stocking fee applies to all returns. Shipping is non-refundable. Prior authorization required for all returns.