U660F Pump, remanufactured and ready to install. Fits the U660F. Ships fast from the USA.
Owners of all-wheel-drive V6 Toyotas and Lexus models with the U660F six-speed usually land here after a hot-idle shift into Drive that takes a second or two, a whine that tracks engine rpm, or slipping that shows up in every gear. Those are front pump symptoms. This remanufactured U660F pump assembly comes as a complete unit; the photo shows the pump body with its bushing and stator support plus the outer O-ring, front seal, sealing rings and bolts laid out beside it, so you can confirm the match against your own unit before you buy.
The U660F is the all-wheel-drive version of Toyota's Aisin U660E, the six-speed front-drive transaxle that Gears Magazine (ATRA) says entered production in the 2007 Lexus ES350 and Camry behind the V6. The F version adds a transfer output to drive the rear axle, but the hydraulic heart is the same: a gear-type pump driven by the torque converter hub feeds the primary regulator valve, which sets the line pressure every clutch, the lockup circuit and the lube system draw from. Toyota controls line pressure, clutch apply and converter lockup electronically with pulse-width-modulated solenoids, but none of that works if the pump cannot deliver volume. Heavier AWD vehicles and V6 torque put more load on the gear train, so a weak pump shows up faster when towing or climbing.
The U660 family has a few faults that mimic a weak pump. Gears Magazine documents case bearing bore wear in the U660E, caused by the low first gear and V6 torque; as the bore wears, centerline shifts, internal bushings wear, and in extreme cases the converter input spline area breaks, causing a no-move. It also notes the wrong fluid can cause flaring shifts and pressure solenoid codes, and that a worn primary regulator valve bore drops line pressure on its own. So check the fluid is Toyota WS at the correct hot level, scan all modules, and take a line pressure test. If pressure is low in every range and drops as the fluid heats, the pump is the likely cause. When you pull the unit, inspect the case bearing bore; if the outer bearing race moves at all, the case needs repair before a new pump will last. Our U660E and U760E service guide covers these checks.
This pump is listed for the U660F with a U660E reference, since the two share the front pump design. The U660F is found only in all-wheel-drive V6 models of this transmission family, so confirm the tag on your case reads U660F rather than U660E. Toyota updated these units during production, so compare the bolt pattern, stator support and casting to your old pump. If you would rather we check, send your year, model and VIN. For front-drive V6 models there is a separate U660E pump listing. Everything for this family is on the U660E and U760E collection page.
If low pressure has already glazed the clutches, rebuild them with the U660F overhaul kit while the unit is apart.
| Fits | U660F |
| Part type | Pump |
| 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.
The U660F is the all-wheel-drive version with a transfer output for the rear axle. The front pump design is shared, which is why this listing references the U660E, but always compare against your old pump.
The product photo shows the pump with an O-ring, front seal, sealing rings and bolts. Compare the picture with your unit, and contact us if you need to confirm contents before ordering.
It can be, but check the case bearing bore and converter input spline too. Published U660E service information describes that area breaking on high-mileage units, which also causes a no-move.
Toyota WS. Set the level hot through the overflow plug using the Toyota temperature window. The wrong fluid causes flaring shifts and solenoid codes.
Clear the adaptive memory with a scan tool that supports Toyota's ECT reset, then drive from cold to hot so the computer relearns shift and lockup timing.
