722.4 Sprag Clutch, new and ready to install. Fits the 722.4. Ships fast from the USA.
This listing is filed under our sprag clutch parts, but what you receive is a complete 722.4 master rebuild kit, reference T07100A. It is built from three sub-kits: the T07102A overhaul gasket and seal set, the T071080A friction plate set and the T071081A steel plate set. That is the right box for a 190E, 190D or early C-Class owner whose four-speed automatic has started to engage late, flare between gears or slip once it is hot, and whose teardown shows tired plates and hardened seals rather than broken hard parts. It does not contain the one-way clutch (sprag) itself, a filter or bushings.
Mercedes coded this transmission W4A 020. It is the small-case member of the four-speed family, rated at 20 kp-m of input torque (about 196 Nm), and was built from 1982 into the mid-1990s. Shifts are controlled hydraulically: a vacuum modulator reads engine load, a Bowden cable from the throttle sets shift points and kickdown, and there is no lock-up in the converter. Gears are made by applying three brakes (B1, B2 and B3) and two clutches (K1 and K2) together with a one-way clutch, which K2 bridges when the car is coasting. Every one of those apply elements depends on a piston seal holding pressure and a plate pack with the correct clearance. After thirty-plus years the rubber goes hard, the linings glaze and the steels heat-spot. This kit renews all three: the seals and gaskets, the lined plates and the steels.
Rule out the controls first, because a hydraulic Mercedes can feel worn out when it is only mis-set. Check the hot fluid level, look for cracked vacuum hoses or a leaking modulator, and confirm the Bowden cable is adjusted to the throttle linkage. A long-running Mercedes enthusiast guide to 722.3 and 722.4 adjustment walks through valve lash, linkage, vacuum supply and modulator pressure in that order before blaming internal parts. If slip and late engagement remain with the controls correct, plates and seals are the cause. The Mercedes slipping under load guide explains how pressure faults and worn packs feel different from the driver's seat, and the 722.6 problems and fixes guide follows the same pressure-first diagnostic order on the later five-speed.
The kit is listed for the Mercedes-Benz 722.4 with a year range of 1984-1993, and the product description extends coverage to 1983-1997 with the note that fitment is a guide only. The 722.4 went into the W201 190-series (1982-1993), the first W202 C-Class (1993-1996) and several W123 models with the smaller four- and six-cylinder engines. Identify your unit before ordering: the reference number is stamped on the case edge just above the pan gasket near the bell housing and reads 722.4 followed by the variant code. The 722.4 is the small case with a six-bolt pan; the larger 722.3 uses different plates. Mercedes made running changes during production, so lay the new plates beside your originals and count them pack by pack. If you are unsure, send us the year and VIN or the case number and we will check it. Every Mercedes part we carry is in the 722 transmission parts collection.
If the valve body is also worn, the 722.4 shift correction kit addresses harsh and late shifts in the same teardown, and a weak pump can be swapped for the remanufactured 722.4 front pump. If your steels are still flat and clean, the 722.4 banner kit is a lower-cost alternative.
| Fits | 722.4 |
| Part type | Sprag Clutch |
| 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 master rebuild kit, reference T07100A: the overhaul gasket and seal set, the friction plate set and the steel plate set. The one-way clutch (sprag) is not included.
The 190E used the 722.4 and 1992 falls inside the listed 1984-1993 range. Check the case number above the pan gasket to confirm it reads 722.4, or send us your VIN.
No. The 722.3 is the large-case, higher-torque version of the same family and uses different plates and seals. This kit is for the small-case 722.4 only.
Plan on a filter, bushings and a fluid fill, and inspect the one-way clutch races, the pump and the drums. A shift correction kit for the valve body is worth doing while the pan is off.
Use an ATF approved for the 722.3/722.4 family. These hydraulic four-speeds do not use the 236.14 or 236.15 fluids made for the later five- and seven-speed units.
Probably not yet. Harsh or late shifts on these units are often vacuum modulator, vacuum supply or Bowden cable adjustment problems. Check those first; this kit is for worn plates and leaking seals.
