Sonnax Part # 6L45-6L90-Zip includes:
Pressure regulator valve (fix worn bore) , Boost valve kit (fix worn bore), Check balls ( common issues)
AFL valve kit
Clutch Select Valve Spring, Compensator Feed Regulator Valve Kit,
TCC Regulator Valve- spring-shuttle valve & end plugs
Center Support seal kit
Vacuum test nut
Sonnax Zip Kit 6L45-6L90-ZIP targets the root cause of multiple complaints by sealing the critical circuit pressure losses in the GM 6L45, 6L50, 6L80, 6L90 valve body. The kit contains uniquely designed parts to prevent the loss of pressures within the main line, clutch apply control, solenoid feed 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.
- 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
This Zip Kit is what the “top of the line transmission shop” use on their rebuilds. This kit requires no special tools (reams).
This kit is all top quality parts and the best instructions are included.
Keep in mind that some valve body have more areas that need to be addressed.
We have been in the transmission industry for over 20 plus years. I'm proud to say I'm a 2nd generation transmission re-builder and transmission tech. I do not sell any product that I would not use on my own rebuilds.