If a bearing should happen to fail they're easy to replace by removing the button head screws which retain them. This way you won't need to replace the entire pulley like has to be done with the stock idlers. These pulleys also provide significant weight savings versus the steel 8-rib pulleys offered elsewhere. This is a great mod for your supercharged L67 or L32 to make MORE POWER!!
The item "Grand Prix GTP Buick Regal Supercharger aluminum 6 rib 6-rib idler set" is in sale since Saturday, February 11, 2017. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Belts, Pulleys & Brackets". The seller is "nherbst454" and is located in Saint Paul, Minnesota. This item can be shipped worldwide.