722.6 Planetary 2000-2009, used and ready to install. Fits the 722.6. Ships fast from the USA.
This is a used, original Mercedes-Benz planetary gear set for the 722.6 five-speed, removed from the W203 C-Class and W211 E-Class family and offered for 2000-2009 transmissions. It comes as the assembly shown in the photos, with the gear set and drums stacked on the shaft, and is identified by its 34 and 65 tooth gear counts. If you have a C240, C320 or E320 with a speed-related whine, missing gears and metal in the pan, a complete OEM assembly is often the quickest way to get the car back on the road without sourcing every gear, pin and washer separately.
Mercedes used three simple planetary sets in the 722.6, front, center and rear, with clutches K1, K2 and K3, brakes B1, B2 and B3, and two one-way freewheels choosing which member of each set is driven or held. Changing which members are locked is what gives the five forward ratios. Because the sets are tied together by shafts and drums, a failure in one usually throws debris into the others. Sonnax lists planetary failure among the problems in this unit and supplies a bearing and seal kit for the K2 clutch drum and a replacement input shaft bushing to deal with the lube loss behind it.
On the W203 and W211, harsh shifts, limp mode and flare between gears are much more often caused by the conductor plate, solenoids or worn valve body bores than by the planetaries. Read the transmission codes and look at the fluid before you pull the unit. The 722.6 E-Class common problems guide and the 722.6 C-Class common problems guide cover those checks for these exact cars. A real gear-train failure leaves metal behind, so if the pan is clean, keep looking elsewhere.
This assembly is listed for 722.6 transmissions from 2000 to 2009 and was pulled from the W203/W211 range. The 722.6 was built in many variants for different engines, so compare tooth counts, shaft splines and drum shape against your own parts before ordering; the listed 34/65 tooth count is the quickest check. If you are unsure, send us your year, model and VIN. The 722.6 and 722.9 collection has the other year-specific gear sets we stock.
Pair this assembly with the 722.6 master rebuild kit for fresh frictions and seals, and since solenoids often fail on high-mileage W203 and W211 units, a 722.6 solenoid kit for 2004-2005 is worth fitting while the valve body is out.
| Fits | 722.6 2000-2009 |
| Part type | Planetary |
| Condition | Used |
| Brand | OEM |
| Reference | W211 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The used OEM assembly in the photos: the gear set with its drums on the shaft, listed with a 34/65 tooth count. Clutch packs, seals and bearings are not refreshed, so plan on a rebuild kit.
It was pulled from the W203/W211 family and is listed for 2000-2009 722.6 units. Count the teeth on your gears and compare shaft splines, or send us your VIN and we will check it.
Yes if it checks out. Spin every pinion, check end play and look for pitting or heat marks before installing, and replace all thrust washers and bearings.
In the 722.6 it is usually a lube problem. Sonnax ties planetary failure to K2 drum bearing and input shaft bushing wear, and old, never-changed fluid makes it worse.
Clear any stored codes and let the transmission control module re-adapt shift pressures with a scan tool or through normal driving after the rebuild.
