# Service bulletin B110721

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10204535
- Published by NHTSA: 2021\-12\-13
- Manufacturer's number: B110721
- Manufacturer's date: 2021\-10\-08
- NHTSA component: POWER TRAIN

## NHTSA's summary

MAIN BEARING SHELL.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10204535-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10204535-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline

## Vehicles listed

- 2022 BMW M3
- 2022 BMW M4
- 2022 BMW X3
- 2022 BMW X4

## Recalls for the same vehicles and component

- [22V070000](/recalls/nhtsa/22V070000.md), 2022-02-09: POWER TRAIN:AUTOMATIC TRANSMISSION

## Other bulletins for the same vehicles and component

- [B260422](/bulletins/10233157.md), 2023-03-20, Service bulletin: ENGINE AND ENGINE COOLING; POWER TRAIN. There is a howling or whistling noise from under the vehicle at 30 \-37 mph \(50 \-60 km/h\) when driving after a cold start, when the outside temperature is 32 F \(0 C\) or lower. The noise goes away as the vehicle/driveline reaches operating temperature.

JSON: [/v1/bulletins/10204535](/v1/bulletins/10204535)

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