- Burnt brake clutches
- Burnt clutches
- Burnt converter
- Delayed Forward
- Harsh shifts
- Low line rise
- Slips, flares & bind-ups
- Soft shifts
- 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.
- B2 Apply Control Plunger Kit
- B1 Apply Control Plunger Kit
- Boost Valve Kit
- Lockup Control Plunger Valve Kit
- Accumulator Piston Kit
- O-Ringed End Plug Kit
- Checkballs (11) Plastic
Sonnax Zip Kit U151E-U250E-ZIP targets the root cause of multiple complaints by sealing the critical circuit pressure losses in the Toyota U151E/F and U250E valve bodies. The kit contains uniquely designed parts to prevent the loss of pressures within the main line, B2 and B1 control, solenoid modulator and lockup control circuits. The kit also seals multiple circuits known to suffer from end plug leakage or poor check ball 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.
- No reaming required
- Installs quickly with no 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
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.
Click on the unit names to view all recommended Sonnax repair options for these transmissions.
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 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.
Click here to view PDF if instructions do not appear below.
Valve Body Layouts
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