" RFE " Accumulator Piston Kit Made By Sonnax Fits and compatible with All Dodge & Jeep 4.7L / 5.7L / 6.7L "RFE" Models Repairs Pressure Loss From Worn Out Bores & Upgrades Factory Plastic Weak Pistons 75% Of The 2009 Up Trucks Need This Kit Fits Below Dodge, Jeep, & Chrysler 45RFE / 45-RFE / 45R-FE 545RFE / 5-45RFE / 545-RFE / 545R-FE 65RFE / 65-RFE / 66RFE / 66-RFE / 65R-FE / 66R-FE 68RFE / 68-RFE / 68R-FE / RE68 / RFE68 *Dual-guide seals prevent piston-to-bore scuffing* *Updated seal location allows use in scuffed bores * *Prevents transmission failure from broken plastic piston