Complete overhaul kit for the Mercedes 722.6 / W5A580 five-speed: frictions, steels, gaskets and seals for build codes 722.621 through 722.649.
If your Mercedes-Benz is slipping on the 2-3 shift, flaring between gears, engaging late from Park when it is cold, or the pan came off full of dark fluid and clutch dust, the five-speed 722.6 behind the engine needs a full overhaul rather than another fluid change. This master rebuild kit carries the overhaul gasket and seal set, the friction plate set and the steel plate set for 722.6 build codes 722.621 through 722.649, the range that covers the 5G-Tronic in the C-, E-, S-, ML- and G-Class cars and the Sprinter vans of the late 1990s and 2000s.
The 722.6 makes five forward gears from three simple planetary gearsets held by three multi-disc brakes and three multi-disc clutches, with no bands at all. Every one of those six packs is a stack of friction plates and steel plates squeezed by a hydraulic piston, and every piston depends on a lip seal or sealing ring to hold apply pressure. Mercedes also used overlap shift control on this unit, meaning one pack releases while the next applies, so a pack that has lost holding capacity shows up right away as a flare during the overlap. A master kit renews both sides of that equation at once: new frictions and steels restore the clamping surface, and the new seals, O-rings and gaskets let each piston hold the pressure the valve body sends it.
Not every flaring 722.6 needs clutches. Sonnax and Transmission Digest both document a common valve body failure on this unit: the working pressure regulator valve bore wears, the modulating pressure signal leaks past it, and line pressure stops rising with engine load. The result is the same 2-3 and 4-5 flare, and Mercedes saw it put high-mileage cars into limp mode as early as 1998. Overlap sleeves in the same circuit wear too. So before you split the case, pull the pan and look at the fluid and the magnet, scan for stored codes, and if the fluid is clean and red, test the valve body first. Our 722.6 common problems and fixes guide walks through that order, and the E-Class shift problems guide covers the W210 and W211 cars specifically. If solenoid or speed sensor codes are the issue, a 722.6 valve body or conductor plate is the right purchase, not this kit.
This kit is listed for 722.6 build codes 722.621 through 722.649. Do not go by model year alone. The build code is stamped on the identification tag on the transmission case, and Mercedes changed clutch stacks and plate counts inside that range, so read your tag and lay the old plates next to the new ones before you assemble. If you cannot read the tag, send us the year, model and VIN before ordering and we will check it. The kit does not include the conductor plate, solenoids, valve body or torque converter. The rest of what we carry for this family, including the 722.9 seven-speed parts, is on the 722 transmission parts page.
Inspect the drums, bushings and pump before reassembly; a scored drum or a worn pump bushing will undo new frictions quickly, and the 722.6 clutch module is the usual replacement when the drum surfaces are damaged. Soak the friction plates in clean ATF before they go in, then check each pack clearance against the factory figure with a dial indicator before you close the case. The filter is not listed in this kit, so plan on a conductor plate kit with filter and pan gasket or a separate filter. Mercedes service data calls for MB 236.14 fluid on most 722.6 variants, and the fill quantity varies by variant, so check the figure for your build code. Flush the cooler and lines so old friction debris does not go straight back into the new unit, then clear adaptations with a scan tool and road test.
If you are still pricing the job against a used unit or a shop rebuild, our 722.6 rebuild cost guide breaks down where the money goes.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is listed for 722.6 build codes 722.621 through 722.649, the five-speed used in C-, E-, S-, ML- and G-Class models and Sprinter vans from the late 1990s through the 2000s. Read the build code on your transmission tag, or send us your year, model and VIN to confirm before ordering.
No. The listing covers the overhaul gasket and seal set, the friction plates and the steel plates. The filter, conductor plate, solenoids, valve body and torque converter are separate parts.
No. A worn working pressure regulator valve bore in the valve body is a well-documented cause of 2-3 and 4-5 flare on this transmission. Check the fluid condition and scan for codes first; clean fluid with flare often points to the valve body.
Mercedes-Benz service data specifies MB 236.14 fluid for most 722.6 variants. Fill capacity varies by variant, so confirm the quantity for your build code and set the level hot with the dipstick tool.
Yes. Clear the transmission adaptations with a capable scan tool after installation, then road test through every gear so the control unit relearns fill times for the new clutch packs.
