Zip Kit Compatible with Ford 10R60, 10R80, 10R90 and Compatible with GM Gen. 1 10L60, 10L80, and 10L90 10-speed automatic transmission. 10L60 (Gen. 1), 10L80 (Gen. 1), 10L90 (Gen. 1), 10R60, 10R80, 10R90 Zip Kit / Part No. 10L80-G1-10R80-ZIP Zip Kit 10L80-G1-10R80-ZIP targets the root cause of multiple complaints by sealing the critical circuit pressure losses in 10R60/80/90 and Gen.1 10L60/80/90 valve bodies. The kit contains uniquely designed parts to prevent the loss of pressures within the main line, TCC, and clutch apply control with no special tools required. 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.