TransLab - Superior Transmission Parts The New TransLab Engineered U140-240-241 Series and U150-151-250 Series Valve Body Upgrade Kit virtually eliminates codes/slips/flairs, soft/erratic shift applies, various shift error/ T.C.C.codes, lock-up clutch overheating and hydraulically induced runaway line pressures. This new kit also improves control of mainline, converter, B3 clutch and accumulator regulation along with improved cooler and lube circuit flow. Our Sure-Cool Pressure Regulator Stabilization eliminates hydraulically induced runaway line pressures. * Includes Real Steel O-ringed end plugs to replace worn, damaged or broken pressurized bore plugs * Addresses the poor lube flow related issues (planetary overheating) * Cures 2-3 3rd shuttle type shifts that accompany a 2-3 cut-loose slip that eventually bun direst frictions * Special steps & tech included for higher capacity lock-up and clutch apply for better shift quality in Taxi/Van, H.D. fleet & rough service vehicles (RAV4/Sienna Van/Highlander