Seller notes

The UPD M157/ M278 performance 5 piece idler kit , includes all pulleys needed to replace the factory plastic idlers on your performance AMG with a high quality CNC billet aluminum machined performance pulley set. High quality Nachi bearings are used and only double metal bearings seals are used to protect bearings from heat and dirt. All our billet performance idlers have a ultra hard anodized coating. * CNC Billet hard anodized coated *ZZ rated high speed Nachi bearings Smooth quiet running * ...

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