Toyota U150, U151 & U250 Transmission Superior End Plug Kit This End Plug Kit from Superior will prevent bleed-off of clutch control pressures, solenoid modulating pressures and secondary regulator pressures that can cause a wide range of issues such as codes, slips, flairs, bumps and bangs and eventually clutch failure. These high quality o-ringed, steel end plugs are specifically designed to be installed easily, without worry of cutting o-rings when installed into the bores. The kit comes with all of the end plugs that are required to replace the leaking/worn/damaged OE stock "pressurized" end plugs. This kit will come with all seven end plugs.