1999on 545RFE 68RFE Transmission Accumulator Piston set and Plate Repair Kit
1999on 545RFE 68RFE Transmission Accumulator Piston set and Plate Repair Kit
E254482519056
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45RFE / 545RFE / 65RFE / 66RFE / 68RFE
Automatic Transmission
Sonnax Accumulator Piston Set and Plate Repair Kit
1999–On
Accumulator Piston 5-piece Set
Accumulator piston scuffing and bore wear are common issues in Chrysler 45RFE, 545RFE, 65RFE, 66RFE, and 68RFE valve bodies, especially under increased pressure. OE pistons have two seal rings: one acts as a guide, the other as a conventional seal. However, side-loading causes contact with the bore, leading to wear and pressure leakage.
Each piston in the Sonnax kit 44894-01MK features dual guide seal rings to prevent scuffing. The oil sealing ring is relocated to run in an unworn bore section, allowing salvage of moderately scuffed bores. Made from 6061 billet aluminum, these pistons upgrade late-model plastic versions to prevent failure.
- Dual-guide seals prevent piston-to-bore scuffing
- Updated seal location allows use in scuffed bores
- Prevents transmission failure from broken plastic pistons
Contents:
- Pistons (5)
- Guide Seals (10) PTFE, Solid
- Seals (5) PTFE, Scarf Cut
Accumulator Cover Plate
The OE accumulator plate in Chrysler 45RFE, 545RFE, 65RFE, 66RFE, and 68RFE units is weak and prone to flexing, which loosens and breaks screws.
Sonnax cover plate kit 44892-01K is a stronger upgrade that salvages damaged valve bodies. It features thicker steel and three extra screw holes for secure mounting.
- Thicker material prevents flexing
- Three extra mounting holes and high torque-rated screws resist vibration
- Specially graded tap provides higher torque yield threads
Contents:
- Accumulator Plate
- Accumulator Shim
- Screws (6)
- Washers (6)




$127.91