722.6 Planetary 1995-05, new and ready to install. Fits the 722.6. Ships fast from the USA.
This is a new, never-installed OEM rear planetary for the Mercedes-Benz 722.6 five-speed automatic, listed under Mercedes part number A1402701743 and offered for 1995 through 2005 production. It is the part to have on the bench when a teardown of a C-Class, E-Class, ML or Sprinter unit turns up a rear set with blued pinions, chewed teeth or a carrier that will not spin freely, and you would rather install new factory hardware than gamble on a pulled core of unknown mileage. The stock record for this piece ties it to the Sprinter 2500 application, which shared the 722.6 in that era.
The 722.6 builds its five forward ratios from three simple planetary gear sets arranged front, center and rear, controlled by three multi-plate clutches (K1, K2, K3), three brakes and two freewheels. Each set is a sun gear, a ring gear and a carrier holding the pinions, and a gear ratio comes from holding one member and driving another. The rear set sits nearest the output end of the gear train. Like the rest of the gear train, it depends on a steady flow of lube oil fed through the input and output shafts; once that flow drops, the pinion pins and thrust surfaces are the first things to heat up.
The 722.6 has more common electrical and valve body faults than gear failures, so rule those out first. A failing conductor plate speed sensor or shift solenoid sets codes and drops the car into limp mode in second gear, which can feel like a lost gear but has nothing to do with the planetary. Scan the transmission control module, then check fluid level and condition. Our 722.6 common problems and fixes guide walks through the electrical and hydraulic checks. If the codes are clean and you have metal in the pan plus a speed-related noise, the gear train is the likely source and the unit needs to come apart for inspection.
The listing covers 722.6 transmissions from 1995 to 2005, which spans the early W202 and W210 cars, the ML, and the Sprinter that this piece was stocked for. Mercedes revised internal parts several times during that run, so compare the number on your old carrier with A1402701743 before ordering, and if your old part is unreadable, send us your year and VIN and we will check it. Browse the full 722.6 and 722.9 parts collection for other internals from the same era.
A planetary failure almost always means the clutches and seals saw debris too, so most rebuilders install this part alongside the 722.6 master rebuild kit, and replace a scored 722.6 clutch drum at the same time.
| Fits | 722.6 1995-05 |
| Part type | Planetary |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is a new OEM part, never installed, listed under Mercedes part number A1402701743.
It is listed for 1995-2005 722.6 transmissions, which includes the W211 E320 five-speed, but internal parts changed during the run. Match the number on your old carrier or send us your year and VIN to confirm.
At minimum the thrust washers and bearings you remove, the input shaft bushing, and a full rebuild kit's clutches and seals, since metal from a failed planetary circulates through the whole unit. Flush the cooler too.
Yes. Pump noise, a failing converter and wheel bearings can all sound similar. A gear-train whine follows road speed in specific gears and is usually backed up by metal on the pan magnet.
ATF approved to Mercedes specification MB 236.14 for the 5-speed. Mercedes warns against mixing fluids of different specifications.
