722.6 Tcc Solenoid, new and ready to install. Fits the 722.6. Ships fast from the USA.
If your five-speed Mercedes or Chrysler, Dodge or Jeep with the NAG1 shudders like it is driving over rumble strips at steady highway speed, holds higher RPM at cruise than it used to, or has a torque converter clutch code stored, the lockup control solenoid is one of the first parts to look at. This is a new genuine Mercedes-Benz TCC / PWM solenoid, part number 140 277 04 35, which Chrysler catalogs as 52108314AB. It comes with one O-ring and fits the 722.6 valve body in both Mercedes cars and the Chrysler-built NAG1 applications.
The 722.6 has six solenoids on its valve body: three on-off shift solenoids, two pressure regulators, and this one. Unlike the shift solenoids, which only switch on for the moment of a shift, the lockup solenoid is pulse-width modulated. The control module varies its duty cycle so the converter clutch can be slipped in gradually and held at a controlled slip, rather than slammed on. That is why a tired TCC solenoid rarely kills the transmission outright. Instead you get an unstable lockup: the module asks for a set slip, the solenoid cannot hold the pressure steady, and the clutch chatters against the converter cover.
Watch the converter slip value on a scan tool at a steady cruise. A healthy unit holds slip close to its target; a bad solenoid or leaking circuit shows slip wandering while the command stays steady. Pull the case connector at the adapter sleeve and check it for fluid, especially on 2004-and-later NAG1 vehicles, where leaking sleeve O-rings set intermittent solenoid codes. Shudder can also come from worn fluid or a failing converter clutch lining, so check the fluid condition first. Our 722.6 torque converter shudder guide covers the full road test, and the 722.6 shift solenoid guide explains how to ohm each solenoid at the connector.
This solenoid fits the 722.6 five-speed automatic used in 1996-and-later Mercedes-Benz C, E, S, ML and other models, and the NAG1 (W5A580) used by Chrysler, Dodge and Jeep. Mercedes revised solenoid part numbers over the years, and some 722.6 solenoids look alike but carry different numbers, so check the number stamped on the solenoid you remove against 140 277 04 35 or 52108314AB, or send us your year and VIN. The full family is on our 722.6 and 722.9 collection page.
If the original solenoids are all high mileage, a 722.6 solenoid kit renews every position at once, and a 722.6 valve body with solenoids is the answer when the bores are worn too.
| Fits | 722.6 |
| Part type | Tcc Solenoid |
| 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.
Yes, 140 277 04 35 is the Mercedes number and 52108314AB is the Chrysler number for the same TCC/PWM solenoid used in the 722.6 and NAG1. Confirm against the number on your old solenoid.
Usually a shudder or chatter at light throttle at highway speed that disappears when lockup releases, plus RPM that wanders slightly at a steady cruise.
Yes. Worn fluid or a glazed converter clutch can shudder too. Check fluid condition and watch commanded versus actual converter slip on a scan tool before replacing parts.
Yes. A new O-ring is included. Old O-rings on this solenoid shrink and leak, which causes lockup slip even when the solenoid itself is good.
Yes. Reset the TCC adaptation values before the road test so the module relearns lockup control with the new solenoid.
