ZF HP28

This list of ZF transmissions details those automotive transmissions created by the German ZF Friedrichshafen AG engineering company.

There are three fundamental types of motor vehicle transmission:

Furthermore, they may also be manufactured solely as a gearbox, and utilise an entirely separate final drive unit (including its differential) – or be supplied as a transaxle, which includes both the gearbox and final drive unit within one housing.

t Dimensional

These may be used in motor cars (automobiles), or light commercial vehicles such as car-derived vans.

The first variant, the 7DT-45 – used in the 911 Carrera, the 2009 997 Carrera and Carrera S models; the 2009 Cayman and Boxster, along with a higher torque version, the 7DT-70 in the 2010 911 Turbo.

These are for heavy motor vehicles; such as large goods vehicles (trucks), buses, motorcoaches, agricultural machinery, plant equipment (such as earth movers), or specialist military vehicles such as tanks.

TD: Truck application with direct-drive final gear ratio
TO: Truck application with over-drive final gear ratio

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