Ford E4OD & 4R100 Transmission Superior Shift Correction Kit This Shift Correction Kit from Superior will improve all E4OD & 4R100 Transmissions from 1989-Up. This Shift Correction Kit eliminates the following problems: Convertor shudder, convertor burn up, reverse problems, weak shifts, stack shifts, lube problems, front seal blow outs and will improve overall performance. This Shift Correction Kit will come with installation directions in English and Spanish and illustrations. We offer a wide range of Superior Shift kits, rebuild kits and everything else you may need for your rebuild! Please see my other listings!