This SK CD4E-Jr Shift Kit is a quick and easy drop in solution to address excessive line pressure resulting in parts breakage and torque converter slip and codes. Corrects/Prevents/Reduces: Codes P1740, P1744 Runaway line pressure Reduces rough 1-2 and 2-3 flare up Converter slip Bushing wear and planet burnups Low lube oil condition Also Includes: EPC relief system TCC/Lock-up boost valve assembly