Mercedes-Benz 722.9 7G-Tronic Plus Automatic Transmission Teardown

The name “7G-Tronic” is Mercedes-Benz’s trademark name for its seven-speed automatic transmission which starts with the W7A 700 and W7A 400 as core models. The Mercedes 7G-Tronic 722.9 transmission is the fifth generation of their transmission line, and it is used in everything from the top of the line Mercedes S-Class, all the way down to the Mercedes C-Class. It has seven forward gears and two reverse gears, which are created by 2 simple planetary gearsets, and 1 Ravigneaux gearset. The 722.9 transmission has four multi-disc brakes and three multi-disc clutches, which give it the ability to drop multiple gears in a single downshift.

Introduced in the fall of 2010, the Mercedes 722.9 7G Tronic Plus transmission was the next evolution of the brand’s 7-speed automatic transmission which improved the transmission’s design so as to better withstand the torque of more modern turbocharged engines as well as be compatible with engine start/stop systems. Along with a number of smaller improvements, the biggest improvement was a new 722.9 torque converter that featured a unique damping system that can better handle the torque and vibration better than the previous generation.

TransTec Products for 722.9 7G-Tronic Automatic Transmission

Overhaul Kit 722.9 2005-UP (w/o Pistons / w/o Int. Plate & Adapter Hsg. Gasket)
Overhaul Kit 722.9 2005-UP (w/ Pistons / w/o Int. Plate & Adapter Hsg. Gasket)
Overhaul Kit 722.9 2005-UP (w/ Pistons / w/ Int. Plate & Adapter Hsg. Gasket)
Piston Kit
Overhaul Kit 722.9 2005-UP (w/o Pistons / w/ Int. Plate & Adapter Hsg. Gasket)
Sealing Ring Kit – (1 Plastic, 1 Teflon)

Automatic Transmission Seal Kits and Tools

TransTec® automatic transmission seal kits continue to be produced with the same high quality and dependability as when the brand debuted in the automotive aftermarket in 1978. As a brand of Freudenberg-NOK Sealing Technologies, the world’s largest producer of sealing products, TransTec® is the only aftermarket overhaul kit brand that is both an original equipment manufacturer and holds ISO-9000 certification. These are just a few of the many reasons why more transmission professionals install TransTec® kits than all other brands combined.

TransTec® Transmission Seal Kits available worldwide

TransTec® brand transmission seal kits have been supplied to the automotive aftermarket since 1978 and are available through distributor all around the globe.

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