722.6 Solenoid Kit 1996, remanufactured and ready to install. Fits the 722.6. Ships fast from the USA.
The 722.6 five-speed went into Mercedes-Benz cars starting with the 1996 model year, which makes the earliest units now close to thirty years old. If an older E-Class or S-Class with this gearbox has started skipping a gear, sitting in one gear until you shut the engine off, or slamming into drive, a tired solenoid is one of the first things to rule in or out. This is a remanufactured six-piece replacement set for the 722.6, listed for 1996 and the 722.605 and 722.620 through 722.633 unit codes, covering every solenoid that bolts to the valve body.
The transmission control module never moves a shift valve directly. It switches solenoids, and the solenoids send oil to the valves. In the 722.6 that work is split between six parts. Three on-off solenoids handle the shifts themselves: one for 1-2 and 4-5, one for 2-3 and one for 3-4. Each only energizes during its own shift. Two more are variable pressure regulators: the modulating pressure solenoid sets working line pressure, and the shift pressure solenoid sets how hard the clutches apply during the shift. The sixth controls torque converter lockup. A first-year unit like a 1996 has spent decades heat-cycling these coils and their O-rings, so it is common for one to fail and the rest to be marginal.
A 722.6 valve body has no pressure test ports, so you cannot just tee in a gauge. Start with a scan tool that reads Mercedes transmission codes and note which solenoid or gear range it flags. Next, unplug the round connector at the side of the case and look inside. Oil in that plug is the classic 722.6 problem: fluid wicks up through a leaking connector and causes intermittent faults that look like bad solenoids. If the plug is dry, measure each solenoid's resistance through the connector pins against the factory chart. Keep in mind that a solenoid with a hardened O-ring can measure perfectly and still bleed off pressure. Our 722.6 shift solenoid symptoms guide walks through the full test, and 722.6 common problems and fixes covers the other faults that mimic a solenoid, such as conductor plate speed sensors.
This listing is for the 1996 722.6. The listing covers the 722.605 and 722.620-633 five-speed codes, which Mercedes used across many sedans, coupes and SUVs from 1996 on. The Chrysler-built NAG1 version did not arrive until later, so this year-specific set is aimed at Mercedes vehicles. The solenoid design carried over for years, but connectors and small details were revised, so compare your old solenoids with the product photo or send us your year and VIN and we will confirm before it ships. If your vehicle is a later model, see the 722.6 solenoid kit for 2001-2005, or browse every part for this gearbox on the 722.6 and 722.9 parts page.
| Fits | 722.6 1996 |
| Part type | Solenoid Kit |
| Condition | Remanufactured |
| 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.
Six: the three shift solenoids, the modulating pressure and shift pressure regulating solenoids, and the torque converter lockup solenoid.
It is listed for the 1996 722.6, unit codes 722.605 and 722.620-633. Compare your old solenoids to the photo or send us your year and VIN and we will confirm fitment.
It can be, because the 722.6 defaults to a limp gear when a solenoid circuit faults. Check the case connector for oil first, since a leaking plug causes the same symptom.
Yes. Fit new O-rings to every solenoid. Shrunken O-rings leak pressure and cause soft shifts even when the solenoid coil tests good.
Use an ATF that carries the MB 236.14 approval, checked hot with the dipstick tool. Clear codes and reset adaptations after the repair.
