belt tensioner used on BMW E31, E34,E38, 530i,740i,540i OE#:11 28 1736 724, 11281736724 DAYCO ... width:28mm belt tensioner used on BMW E31, E34,E38, 530i,740i,540iOEM number: 11 28 1736 724, 11281736724Other cross ... 55018Outer Dia.:70mm Width:28mmBelt tensioner pulley used on: BMW 530i 1994-1995 (E34 chassis)BMW 540i 1994-1995 (E34 chassis ... price. Belt tensioner used on BMW E31, E34,E38, 530i,740i,540i