Manual gearbox
Lets the driver choose gear ratios between engine and wheels.
Between engine and final drive, with orientation depending on layout.
Gear pairs and synchronizers select ratios; a clutch disconnects engine torque during changes.
A set of selectable bicycle gears in a sealed case.
Crunching, difficult selection or whine can involve clutch release, linkage or internal wear.
Use the exact gearbox and axle service guidance. Loads, seals, lubricant condition and driving use influence wear.
An accessible mount or seal differs from internal transmission work. Gearbox identification and diagnosis are essential to a useful quote.
BMW manual gearboxes vary across chassis; the badge does not identify lubricant or internal design.
BMW rear-drive, front-drive and xDrive applications as equipped; layouts differ by platform.