Guys, if we're talking about the N62 V8, it does have two timing chain tensioners one on the lower right side of the block (pass side in LHD) and one on the upper left side of the intake manifold (driver side in LHD).


Lower right - Part #13

https://www.realoem.com/bmw/enUS/sho...diagId=11_3267


FCPEuro:
https://www.fcpeuro.com/products/bmw...-11317504440oe



Upper left - Part #12

https://www.realoem.com/bmw/enUS/sho...diagId=11_3268


FCPEuro:
https://www.fcpeuro.com/products/bmw...-11311439552oe