U140E Overhaul Kit 1998-2013, new and ready to install. Fits the U140E. Ships fast from the USA.
If your Toyota or Lexus four-speed has lost Reverse, slips on the 2-3 shift after it warms up, or is leaking at the pan and axle seals, the clutches are not always the first thing to go. On the Aisin U140 family a lot of those complaints start with hardened seals, a leaking piston or a worn sealing ring that bleeds apply pressure. This 1998-2013 overhaul kit is the sealing side of a rebuild: gaskets, lip seals, O-rings, sealing rings and rubber parts, plus molded (bonded) pistons, for the U140E, U140F, U240E and U241E. It does not include friction or steel plates, so you reuse good clutch packs or add a friction kit if the plates are burnt.
Every clutch and brake in the U140E is applied by a piston that is pushed by line pressure fed through the case, the shafts and the drums. The oil only gets there if the sealing rings on the shafts, the lip seals on each piston and the gaskets between the valve body, the case and the rear cover all hold. When the rubber shrinks with heat and age, pressure leaks past it and the clutch pack slips even though the friction material is fine. Molded pistons have the seal bonded to the piston itself, so a hardened bonded seal means replacing the piston, which is why this kit includes them. Resealing every circuit in one teardown restores apply pressure throughout the unit.
Check the fluid first. Clean red fluid with a slip usually means a pressure leak; dark, burnt fluid with clutch material in the pan means the frictions are gone too and you need a full rebuild. Sonnax and the TASC Force point to three U140/U240 failures that cause 2-3 slip or no Reverse: a direct clutch drum grooved by its sealing rings, a missing or damaged rubber washer seal between the case and the rear cover, and damaged B2 piston seals. Measure the direct drum sealing ring clearance during teardown. Our Aisin slipping-under-load guide and slipping diagnosis guide walk through the pressure checks before you pull the unit, and the U140E and U140F problems page covers the common failures by model.
The kit is listed for the U140E, U140F, U240E and U241E built from 1998 to 2013. Common applications for those transmissions include:
Gaskets and valve body parts changed over the years, so check the transmission code on the case tag and compare the pan and separator gaskets with your old ones before you start. If you are unsure, send us your year, model and VIN. Our Aisin transmission parts collection has the rest of the hard parts for this unit.
| Fits | U140E 1998-2013 |
| Part type | Overhaul Kit |
| Condition | New |
| Brand | OEM |
| Reference | U240E |
| Ships | From the USA |
| Warranty | 1-year |
No. It is the sealing and piston side of a rebuild: gaskets, seals, O-rings, sealing rings, rubber parts and molded pistons. Reuse good clutch packs or buy a U140E friction plate kit if yours are burnt.
The 4-cylinder 2002-2005 Camry uses the U241E, which this kit is listed for. Check the transmission code on the case tag to be sure, or send us your VIN.
No. The 2006-and-later RAV4 V6 and the 3.3L Highlander use five-speed U151 or U151F units, not the U140 family.
The U140 family uses molded pistons with the seal bonded to the piston. Once that rubber hardens, the piston is replaced as a unit, so the kit includes them for a complete reseal.
Use the Toyota fluid your owner's manual lists: Type T-IV on earlier units, WS on later vehicles that call for it. Check the level hot with the factory procedure and reset the transmission learned values.
