Ford E4OD & 4R100 Transmission Transgo Accumulator Kit This Shift Correction Kit from Superior will improve all E4OD & 4R100 Transmissions from 1989-Up. Corrects- Clutch Burn up! Missing Gear! and Long Shifts... This Transgo accumulator kit is designed to replace your worn original equipment .372 diameter aluminum valve and bushing that can cause soft shifts with the improved steel .371 Line Boost valve & Bushing! This kit fixes the common wear areas in the E4OD/4R100! The original aluminum clutch line regulator valves shed the hard plating on the ends, scratch the bore stick. Resulting in burned clutches and missing shifts. Replace with 3 New Hard Steel Regulator Valves that fit all E4OD’s/4R100 and fix the problem! This Shift Correction Kit will come with installation directions 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!