U660E Valve Body 2007-2018, remanufactured and ready to install. Fits the U660E. Ships fast from the USA.
The Lexus ES 350 used the U660E for both of its front-drive V6 generations, from the 2007 launch through the 2018 model year, and this remanufactured valve body is listed against that whole span. If your ES 350, Camry V6 or Avalon has started throwing solenoid pressure codes, flaring between gears, or delivering a soft buzz through the seat at city speeds, the valve body is the most common wear item behind those complaints on this transaxle, and replacing it as a finished assembly is the quickest way back to factory shift quality.
Aisin designed the U660E with clutch-to-clutch shifting, so the computer and the valve body overlap one clutch releasing against the next one applying on every shift. Several linear solenoids, including the SL units for the clutches, SLT for line pressure and SLU for lockup, sit on the valve body and receive a regulated feed from the solenoid modulator valve. The TCM pulses those solenoids continuously, and each one controls a spool valve riding in an aluminum bore. When that feed or those bores leak, the computer is no longer getting the pressure it commands, and shift quality falls apart even though every solenoid still tests good on the bench.
Sonnax, which makes repair parts for this exact casting, identifies the solenoid modulator bore as a primary wear point: the steel valve side-loads the aluminum bore until line pressure bleeds off and the SL, SLT and SLU circuits see excess pressure. A rebuilder confirms that with a vacuum test on the bench, but at home you can narrow it down first. Verify the fluid is genuine WS and set to the correct level, check freeze-frame data on any codes, and do the manual-gear test for shudder. Our U660E and U760E problems and service guide covers what worn bores look like and the order to rule things out, so you do not pay for a converter when the fault is in the valve body.
This listing covers the U660E from 2007 through 2018 and carries an ES 350 reference. Twelve model years is a long run, and Toyota revised calibration and some internal parts along the way, so do not order on year alone. Match the casting number and solenoid connector arrangement on your old valve body to our photos, or send us your year, model and VIN and we will verify the revision before it ships. If you need a narrower year range, compare the 2007-2015 U660E valve body and the full U660E collection.
Drain the fluid, drop the pan, remove the filter and unplug the solenoid harness before unbolting the valve body; note each bolt location, since lengths vary. Clean the pan and magnet completely - metal or clutch material left behind will score the new bores in short order. Torque the valve body bolts in the factory sequence and reconnect the harness carefully. Fill with Toyota Genuine ATF WS and set the level hot through the overflow, following the temperature-based procedure in our U660E fluid capacity guide; the total system holds 6.57 liters including the differential, so a service fill replaces only part of that. Reset adaptive values afterward. If you want new solenoids along with the swap, the U660E solenoid kit for 2007-2018 covers the same year range, and a U660E shift kit is the option for owners rebuilding their own valve body who want firmer shifts.
| Fits | U660E 2007-2018 |
| Part type | Valve Body |
| Condition | Remanufactured |
| Brand | OEM |
| Reference | ES350 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The listing covers 2007-2018, which spans both front-drive ES 350 generations that used the U660E. Because Toyota revised parts over those years, confirm with your casting number and connector layout or send us your VIN.
Often, yes. Wear in the solenoid modulator and valve bores leaks pressure the solenoid is commanding, so the circuit reads correct electrically but the hydraulic result is wrong. That is a valve body problem, not a wiring or solenoid problem.
If the solenoids have high mileage or were part of the original complaint, replacing them at the same time avoids a second teardown. Our 2007-2018 U660E solenoid kit covers the same year range.
Total capacity is 6.57 liters including the differential, but a valve body swap only replaces what drains from the pan. Buy extra genuine WS ATF, because the level-set procedure runs fluid out of the overflow on purpose.
Yes. Clear codes and reset the transmission adaptive values with a scan tool, then drive normally so the computer relearns clutch fill and lockup timing against the new valve body.
