• Burnt clutches
  • Low line rise
  • Soft shifts
  • Slips & flares
  • Delayed engagement
  • TCC apply & release concerns
  • TCC codes


Loss of oil pressure due to worn components in critical oil circuits.


Zip Kit seals critical pressure losses and restores and extends accumulator action. Drop-in parts install quickly and easily.

U140E, U140F, U240E, U241E

Zip Kit®
Part No. U140E-U241E-ZIP

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Sonnax Zip Kit U140E-U241E-ZIP targets the root cause of multiple complaints by sealing the critical circuit pressure losses in the Toyota U140E/F, U240E and U241E valve bodies. The kit contains uniquely designed parts to prevent the loss of pressures within the main line, clutch apply control and lockup control circuits. The kit also seals multiple circuits known to suffer from end plug leakage or poor checkball sealing. No special tools are required for installing these parts.

The Zip Kit quick guide provides clear and easy instructions on one sheet to get the unit sealed up and back on the road fast. In addition to general rebuilding tips and technical information, the technical booklet included in this kit contains vacuum testing and additional repair options for higher mileage units or for repairing specific complaints which are beyond the scope of this kit.

  • Drop-in Zip Valve parts install quickly and easily, no reaming or special tools required
  • Uniquely designed parts address root causes of valve body complaints by sealing critical pressure circuits
  • Detailed technical booklet included with in-depth rebuild and inspection tips for comprehensive valve body repair
Learn More About Zip Valve™ Drop-In Repairs
  • Lockup Control Plunger Valve Kit
  • O-Ringed End Plug Kit
  • Accumulator Piston Kits (2)
  • Checkballs (11) Plastic
  • Boost Valve Kit
  • Clutch Apply Control Plunger Valve Kit

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.

Toyota/Lexus U140E/F, U240E, U241E Valve Body Layout

Toyota/Lexus U140E/F, U240E, U241E Valve Body Layout
  • U140E, U140F, U240E, U241E Zip Kit® U140E-U241E-ZIP


Zip Kit® Video - The First Step in Correcting Common Shift Problems
Sonnax Zip Kit

The Sonnax ZIP KIT®

The First Step in Correcting Common Shift Problems

It's easy to restore and extend vehicle shift quality with Zip Kits. Uniquely designed, drop-in Sonnax parts target the root cause of valve body complaints and stop critical circuit pressure losses in the most common problem areas of the transmission.

Learn More About Sonnax Zip Kits