The Gates belt-drive pulley for 2012–2015 Mercedes-Benz S550 V8 4.6L is a grooved idler intended as a direct replacement to maintain proper belt routing and accessory drive operation. It matches the factory groove profile to keep belts aligned under load. This part is supplied for like-for-like replacement during scheduled maintenance or pulley replacement.
Gates 12-15 Mercedes-Benz S550 V-8 4.6L Grooved Belt Drive Pulley