11 31 1 708 806 : Upper idler pulley for BMW Series 5 E34

This upper idler pulley is intended for the BMW Series 5 E34, in its saloon and Touring versions equipped with the 518i M40 engine. An essential component of the timing chain, it ensures proper belt guidance and tension, guaranteeing correct synchronisation of the camshafts and crankshaft. During the restoration or maintenance of a classic vehicle, its replacement is recommended as soon as play, noise or visible wear appears. Supplied as a new part, it allows you to restore the original specifications of your BMW Series 5 E34.