Bmw X5 Timing Belt. 2007 - 2013 E70 30 L N52B30 si xDrive30i timing chain. BMW X5 E53 2000-2006 Timing Belts and Tensioners The tolerances between the valves and pistons on some engines are very narrow and this potentially disastrous dance between parts is all kept in harmony by the timing belt and tensioners.
1999 - 2006 E53 30i M54B30 I6. BMW does not use belts they use chains which generally last as long as the engine -- although sometimes they might fail or stretch it is rare. 1991 BMW 325i L6-25L Timing Belt Replacement.
1992 BMW 325i L6-25L Timing Belt Replacement.
It required a change as I recall at 70K miles or so. The last BMW engine that used a belt that I am aware of was the ETA engine used in the 3 and entry 5 series many years ago. BMW has come up with a test procedure to determine timing chain wear. Our largest inventory of Timing Belts fits 2016-2018 BMW X5 and more.