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724.2 Transmission parts

HK7A700, HK7C700

Transmission general data

Number of gears Transmission Type Drive ATF (full capacity) L ATF type (recommended)
7 Hybrid System RWD 9,5 236.15

In the fall of 2010, engineers of Mercedes-Benz presented an updated version of the automatic gearbox 7G-Tronic Plus. For the first time this gearbox was applied in the CL-class (216 series). According to representatives of the company, this gearbox became more comfortable, quick-operating and economical than its predecessor. The 724.2 gearbox is equipped with the torque converter of a new generation. This torque converter is more durable; it has reduced noise level and faster response time thanks to innovative technology. In addition, this gearbox is equipped with the “start-stop” system. The engine RPM gets reduced in the ECO mode that significantly contributes to fuel economy.

What are you looking for?

Overhaul Kit | Friction Kit | Friction | Steel Plate | Steel Kit | Band | Solenoid Kit | Solenoid EPC | Solenoid TCC | Pump | Shaft | Drum | Valve body | Torque converter | Hub | Piston | Piston Kit | Planetary Gear | Filter | Gasket | Bushing | Seal | Bearing | Pressure Plate | Stator | Differential | Retainer | Inhibitor Switch | Instruction manual | TOOLS & ACCESORIES | Sensor

Which cars run with this gearbox? CLICK

The 724.2 gearbox undergone systematic optimizations to reduce energy losses caused by traction. This and other measures made it possible achieve 7% fuel economy. In 2012 a new car Mercedes-Benz SL was equipped with the 7G-Tronic Plus. The roadster became the first car of Mercedes-Benz, which was equipped with a newly developed Direct Select paddle shifter on the centre console. This feature is used for more dynamic driving style. The latest changes in 7G-Tronic Plus were introduced in 2013. The updated version of this gearbox was used in E300 BlueTEC HYBRID, where the 20 kW e-motor was integrated in the case of the torque converter. In 2013 the 7G-Tronic was replaced by the 9G-Tronic automatic gearbox.


- 7-forward gears: increased difference between gear ratios of lowest and highest gears, while maintaining small intervals between gear ratios in other gears, increases driving comfort.

- Optimal engine RPM contributed to low fuel consumption and smooth gear shifting.

- Solid power reserve: fast accelerations became possible thanks to reverse gear shifting with omitting of several gears;

- New generation torque converter: reduced wear, lower noise level and better responsiveness thanks to innovative technology.

- Reduced fuel consumption: the function “Start-Stop ECO” ensures that the engine switches off temporarily when the car gets stick in traffic jams of stops at traffic lights.

- Comfort and sportiness: drivers can choose from 3 operation modes: «E» (Economy) – to reduce fuel consumption, «S» (Sport) – for sporty driving style, «М» (Manual) – for rapid gear shifting with the help of paddle shifters.