Question 1

What does a gearbox do in a car?

Accepted Answer

A gearbox is a gear assembly that allows you to change gear ratios between the engine and the wheels, adapting torque to driving speed.

Question 2

How does a car's drive work?

Accepted Answer

The drive is the system that transfers power from the engine to the wheels – depending on the type (FWD, RWD, AWD) it differs in the arrangement of shafts and differentials.

Question 3

What is the difference between a manual and an automatic transmission?

Accepted Answer

A manual transmission requires the driver to operate the clutch and shift gears, while an automatic transmission automatically adjusts the gear ratios to driving conditions.

Question 4

How do I check which gearbox fits my car?

Accepted Answer

The surest way is to check the gearbox code (e.g. on the data plate) or VIN number – this ensures full OEM fit.

Question 5

What symptoms indicate a drive problem?

Accepted Answer

Vibrations, noises when starting or jerking may indicate a worn universal joint or play in the drive shaft.

Question 6

Do BMW E90 gearboxes fit other models?

Accepted Answer

Some versions (e.g. 6HP19) are compatible with BMW E60 or X3 models, provided that the OEM number and drive type match.

Question 7

Is replacing the gearbox cost-effective?

Accepted Answer

Yes – used, proven gearboxes offer up to 60% savings compared to new ones, while maintaining full functionality.

Gearboxes and drives

Audi A4 B8 A5 8T 3.0 TDI Automatic Gearbox Multitronic NDY 0AW300047A WARRANTY

Mercedes W176 M270 Engine Bleed Pipe Pressure Hose Line Petrol A2700184300

BMW X1 E84 18dX 20dX E90 E91 330xd Front Differential 2,92 7572651 RECONDITIONED

Mercedes A B Class W169 W245 Front Left N/S Axle Drive Half Shaft A1693607572