One AMG Mercedes Supercharger/ Serpintine smooth tensioner pulley . Billet machined in USA with special cut cooling slots to keep bearing and pulley cool and run quiet. Nachi bearings used in all idlers and know to be the best in pulley bearing performance. Comes with custom bearing shield. Made from billet aluminium and hard anodized in clear coat. Heavy duty!

This idler will fit both the tensioner and second smooth idler on the engine. You can order 2, if you want to replace both. This is one of the fastest turning idlers on the engine and known to fail. Fits all AMG mercedes 2002-2004 Mercedes C32 AMG W203.065 2002-2004 Mercedes SLK32 AMG R170.466

Made in USA and going on Mercedes AMG for over 14 years!