Symptoms:

  • Shift concerns
  • Lockup concerns
  • Burnt clutches

Cause:

Wear of the end plugs allows valuable line pressure and SLT pressure to leak at the various valve bores.

Correction:

These Sonnax O-ringed end plugs restore correct circuit pressures. The O-ring provides additional sealing to reduce hydraulic losses at critical circuits.

U660E, U660F, U760E, U760F

O-Ringed End Plug Kit
Part No. 47740-21K

You need this if... View Instructions Find a Distributor

The end plugs at the various valves are designed to seal line pressure and SLT pressure that is critical in controlling component apply pressure during shifts at various throttle pressures. When this fluid pressure is allowed to leak due to plug wear, various shift complaints and burnt clutches occur within those specific circuits. Loss of pressure at the secondary regulator valve and lockup relay valve plugs also prevents proper control of the converter circuit, creating lockup complaints.

Sonnax O-ringed end plug kit 47740-21K restores correct circuit pressures in Toyota/Lexus U660E/F, U760E/F units. The O-ring provides additional sealing to reduce hydraulic losses at critical circuits.

  • No special tools required
  • Minimal end plug-to-bore clearance with added O-ring for positive seal
  • End Plugs, Small (6)
  • O-Rings, Small (9) 3 Extra
  • End Plug, Large
  • O-Rings, Large (2) 1 Extra

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 U660E/F, U760E/F Valve Body Layout

Toyota U660E/F, U760E/F Valve Body Layout
  • U660E, U660F, U760E, U760F O-Ringed End Plug Kit 47740-21K
  • U660E, U660F, U760E, U760F O-Ringed End Plug Kit 47740-21K

You need this if...

A vacuum test at the ports indicated fail to hold at least 18 in-Hg.

U660E, U660F, U760E, U760F O-Ringed End Plug Kit Vacuum Test Locations