U660F Valve Body, remanufactured and ready to install. Fits the U660F. Ships fast from the USA.
A Toyota Camry, Highlander, Sienna, Avalon, RAV4 or Lexus ES or RX running the U660F six-speed automatic that shifts harsh into gear, flares between gears, slips, or shudders under light throttle at a steady cruise is usually telling you the valve body has worn out, not that the whole transmission needs to come out. This remanufactured U660F valve body replaces the worn unit with a bench-tested part so the transmission shifts the way it did when the car was new.
The U660F is Toyota and Aisin's six-speed front-wheel-drive electronic automatic transaxle. The valve body is its hydraulic brain: it routes line pressure through precision bores and spool valves to apply each clutch and band, and it carries the shift and pressure control solenoids the transmission control module uses to time every shift. Once the bores wear oval or a solenoid loses its seal, pressure control gets inconsistent, and the shifts that used to be smooth start going wrong one at a time rather than all at once.
Pull codes and run a Manual-3 isolation test before assuming the valve body is the culprit. Our U660E/U760E problems and service guide walks through separating a shudder that disappears when you hold the transmission in Manual-3 - which usually points at the torque converter clutch circuit - from one that persists, which points at the valve body or converter itself. A fluid and filter service with a level check at the correct temperature is worth doing first, since this unit is checked by fluid temperature rather than a dipstick; our U660E fluid type and capacity guide covers the exact window and procedure.
This listing is not tied to a single model year, so match it against your own vehicle before ordering. The U660F and its U660E/U760E relatives cover 2007-2019 Toyota Camry, RAV4, Highlander, Sienna and Avalon along with the Lexus ES and RX, and Toyota updated internal components more than once across that run. Confirm your casting number and connector style against your old unit, or send us your exact year and VIN before you install. Browse the full U660 transmission parts collection for the year-specific valve bodies we stock if you need an exact match instead of this general-fit unit.
Drop the pan and pull the filter first so debris from the failing unit does not recirculate through the new valve body, disconnect the internal harness connectors, then walk the mounting bolts out in a crossing pattern so the separator plate and check balls stay seated. On reassembly, torque the bolts evenly to spec, install a new filter and pan gasket - a U660E filter and pan gasket kit covers that in one part - and refill with Toyota Genuine WS ATF to the level set at the correct fluid temperature. Clear the adaptive memory afterward and drive the car through several light-throttle upshifts and downshifts so the TCM relearns clutch apply timing; skipping that step is the most common reason a good valve body still shifts rough for the first few dozen miles. If your shudder was isolated to the torque converter clutch circuit rather than general shift quality, pair this with a U660E TCC solenoid instead of swapping the whole valve body a second time.
| Fits | U660F |
| Part type | Valve Body |
| Condition | Remanufactured |
| Brand | OEM |
| Reference | U660E |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Match your casting number and connector style against your old valve body, or send us your exact year and VIN before ordering. The U660F covers 2007-2019 across more than one internal revision, so matching the physical part is what matters, not the model year alone.
Toyota Genuine WS ATF, checked by fluid temperature in the 185-194F window rather than by a dipstick.
Yes - clear the adaptive memory and drive the car through several light-throttle upshifts and downshifts so the TCM relearns clutch apply timing against the new valve body.
Possibly not. A shudder that disappears in Manual-3 usually points at the torque converter clutch circuit specifically, not the valve body as a whole. See our U660E/U760E problems guide for the isolation test.
Yes - it is remanufactured and bench-tested, and it carries a 1-year warranty.
U660F is the badge used on some Toyota applications for the same Aisin six-speed family as the U660E, and they share the same valve body design. Match the casting number to be certain before you install.
