• Burnt clutches
  • Delayed engagement
  • Inadequate lubrication
  • Low pressure
  • Slips & flares
  • 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. Drop-in parts install quickly and easily.

A340E, A340F

Zip Kit®
Part No. A340-LATE-ZIP

Fits '00-later V6 and V8 units, type 3 & 4.

View Instructions Find a Distributor

Sonnax Zip Kit A340-LATE-ZIP targets the root cause of multiple complaints by sealing the critical circuit pressure losses in the Toyota/Lexus A340E/F, Type 3 and 4 valve bodies. The kit contains uniquely designed parts to prevent the loss of pressures within the main line, accumulator, EPC 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 information and locations at other key areas of the valve body.

  • 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

Shims and EPC boost valves are selective, follow instructions given in quick guide.

  • Lockup Relay Control Valve & Sleeve
  • Dual Ratio Boost Valve Kit
  • Extra O-Rings (6) 1 Extra Large, 2 Large, 2 Medium, 1 Small
  • Accumulator Control Valve End Plug & O-Ring Extra-Large O-Ring
  • Secondary Regulator Valve & Reverse Control Valve End Plugs & O-Rings 2 Each, Large O-Rings
  • 1-2, 2-3 & 3-4 Shift Valves End Plugs & O-Rings 3 Each, Medium O-Rings
  • 2nd Coast Modulator Valve End Plug & O-Ring Small O-Ring
  • Checkballs (2) Large, .250" dia.
  • Checkballs (9) Small, .218" dia.

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 A340, A340E/F/H Valve Body Layout

Toyota/Lexus A340, A340E/F/H Valve Body Layout

  • A340E, A340F Zip Kit® A340-LATE-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