AODE, 4R70W and 4R75W 1991-2013 Ford/Lincoln Mercury Upgraded in July 2013 to include new Steel Pressure Regulator valve and accumulator spring upgrades. Includes new Solenoid Regulator valve, EPC Relief system, 3rd Accumulator Plate saver, and special High Tech Forward Clutch sealing rings. Addresses 4th band failure; 2nd roller failure; long soft 1-2 and 2-3 shifts; reduces accidental high-pressure parts breakage. Saves cracked and worn separator plate. Improves and restores correct drivability with added durability. Crisp but Smooth Shifts. For firmer Heavy Duty or Performance type shifts use AODE-HD2 Reprogramming Kit™ Installation recommendation: Experienced technician Transmission removal necessary: No