U660E Planetary 2006, new and ready to install. Fits the U660E. Ships fast from the USA.
If your V6 Camry, Avalon, Venza, Highlander, Sienna, RAV4 or Lexus ES350 has a U660E that whines with road speed, dropped a gear, or left shiny metal in the pan, the underdrive planetary set is one of the parts a rebuilder looks at first. This listing is a new aftermarket U660E/U660F underdrive (U/D) planetary gear set made to original-equipment dimensions. The set includes the gear set, ring gear, pinions and bearings, so you are not reusing tired needle bearings on a fresh carrier.
The U660E is a six-speed front-drive transaxle that builds its ratios from just two gearsets. ATSG's technical data lists one Ravigneaux set and one U/D planetary set, and gives the U/D set's tooth counts as a 66-tooth sun gear, 21-tooth pinions and a 110-tooth ring gear. Working together with the counter gear (44 drive, 47 driven), they produce a 3.300 first gear down to a 0.608 sixth on a 2007 Camry. Because first gear is that low and the V6 makes so much torque, the gear train in this unit takes a heavy load, and the pinion needles, thrust surfaces and ring gear are where wear shows up.
Noise complaints on this transmission are easy to misread. Rule out wheel bearings, CV joints and a failing converter first, then pull the pan and inspect what is on the magnet. Gears Magazine warns that the U660E is prone to case wear at the main gear train bearing bore, which leads to centerline problems and bushing wear; if the outer bearing race moves at all, the case has to be repaired or replaced, or a new planetary will wear the same way. Shift-quality complaints with no noise usually belong to the valve body, solenoids or the case-mounted TCM, so work through our U660E and U760E problems and service guide before tearing the unit down.
The listing calls this the V6 set for U660E (2WD) and U660F (AWD), 2006 and up, with interchange reference 155310. The 2006 date reflects early production: ATSG's application list starts the Camry and Lexus ES350 at 2006, while Gears Magazine dates the U660E's U.S. debut to the 2007 model year. It is not the four-cylinder U760E part, which is sold under a different reference. Lay your old set beside the photo and confirm the 66-tooth sun gear and the ring gear before ordering, or send your year and VIN and we will check it. The rest of the build is on our U660E parts page.
Clean the case and inspect the bearing bore before anything goes back in. Check pinion end play on the new carrier, then replace the thrust washers, thrust bearings and bushings that ride against the gearset; worn bushings are what let the old set run out of line. A U660E master rebuild kit covers the frictions, seals and gaskets, and if the input side shows wear the U660E front planetary carrier assembly is listed separately. Refill only with Toyota WS fluid; ATSG lists 6.57 liters (6.94 US quarts) for a dry unit including the differential. Set the final level hot using Toyota's procedure in T-SB-0036-13, which our U660E fluid capacity guide walks through, then reset the transmission adaptive values with a scan tool that truly supports the ECT reset.
| Fits | U660E 2006 |
| Part type | Planetary |
| 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.
The listing includes the planetary gear set, ring gear, pinions and bearings. Thrust washers, bushings and seals around it are not included and should come from a rebuild kit.
No. This is the V6 U660E/U660F underdrive set. The U760E set is a separate part with a different interchange reference.
The listing names both U660E (2WD) and U660F (AWD). Compare your old set to the photo or send your year and VIN to confirm.
Production of 2007 model-year Camry and ES350 began in 2006, and ATSG's application list starts those models at 2006. Gears Magazine dates the U.S. debut to the 2007 model year.
Toyota WS only. ATSG lists 6.57 liters (6.94 US quarts) for a dry unit including the differential; finish with the hot level check rather than a set amount.
