For 2013 BMW 135i Timing Belt Tensioner

Overview Engine belt tensioner assembly for maintaining belt tension. Installation involves releasing tension, removing the mounting bolts and tensioner, aligning the replacement with the belt path, reinstalling the belt, and checking timing alignment. Key Features - V-ribbed belt type - Two pulleys - One mounting hole Specifications Bearing Bore Inside Diameter: 17 mm Outside Diameter: 70 mm Width: 30 mm Reference Numbers Replaces OE: 11-28-7-582-11287582946 Interchange: URO012135, 48742, 503860, 39416, FT40496 What's Included 1 x Engine Belt Tensioner; mounting hardware not stated Installation Release tension using a wrench on the tensioner pulley. Remove the mounting bolts and tensioner, install the replacement aligned with the belt path, tighten bolts to manufacturer specifications, reinstall the belt, and rotate the engine manually to verify timing marks. Vehicle Applications 2013-2015 BMW X1 3.0L 2011-2013 BMW 135i 3.0L 2011-2014 BMW 335i 3.0L 2011-2014 BMW 335i xDrive 3.0L