Timing Chain Tensioner, BMW - G42, G2X, G8X, G30, X3, X4, X5, X6, X7, Z4 (B58D, S58)

This part is listed by BMW as BMW part number 11318631848 (11 31 8 631 848) and is described as the Timing Chain Tensioner for B58D (B58TU) and S58 engines.

A new gasket ring is included (part #11319845293).

Not for cars before the 2019 model year. This tensioner is for the newer/later style B58 engine, known as the B58TU or B58D, which is significantly different than the previous years.

If you are doing an engine overhaul, VANOS, or timing chain work, this chain tensioner should be on your "must replace" list. It has the important job of maintain proper chain tension. When this chain tensioner fails, the first symptom will be excessive timing chain noise. This noise is indicating potential damage to your timing chain, chain guides and cam gears.

This is a Genuine BMW timing chain tensioner with a two year warranty. Buying a Genuine part will usually be more expensive than an OEM or aftermarket brand but you are assured that it meets BMW's designs for fitment, performance, and longevity. It will also be the very latest design, incorporating any updates or revisions that an aftermarket brand typically will ignore.

For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.