45RFE 545RFE 68RFE Grey Shift Solenoid Block Pack with Mopar Quality

Description:

The 45RFE / 545RFE / 68RFE Grey Shift Solenoid Block Pack is used in Chrysler automatic transmission valve body systems to control hydraulic pressure routing for gear shifting, line pressure regulation, and torque converter clutch engagement. Commonly installed in Dodge Ram, Jeep, and Chrysler vehicles equipped with RFE-series transmissions where electronic solenoid control is required for precise shift timing and adaptive transmission performance. Transmission technicians, OEM rebuilders, and automotive repair shops use this solenoid pack for valve body repair, shift quality restoration, diagnostic fault correction, and replacement of failed or upgraded solenoid assemblies.

Applications:

The 45RFE / 545RFE / 68RFE grey solenoid block pack is commonly used in Chrysler group vehicles including Dodge Ram 1500–3500, Jeep Grand Cherokee, Dodge Durango, and Chrysler Aspen equipped with 3.7L, 4.7L, 5.7L HEMI, and 6.7L diesel engines where hydraulic control of gear selection, pressure modulation, and torque converter lock-up is required to maintain towing capability, drivability, and transmission durability under heavy load conditions.

Technical Specifications:

• Manufacturer: Mopar / OEM or aftermarket replacement
• Model / Part number: 45RFE / 545RFE / 68RFE grey shift solenoid block pack
• Product type: Automatic transmission solenoid assembly (valve body integrated pack)
• Transmission type: 45RFE / 545RFE / 68RFE 4–6 speed automatic
• Vehicle compatibility: Dodge Ram, Jeep Grand Cherokee, Dodge Durango, Chrysler Aspen (RFE applications)
• Function: Hydraulic shift control, EPC pressure regulation, torque converter clutch control
• Operating voltage: 12V DC
• Construction: Integrated electromagnetic solenoids with aluminum valve body interface
• Mounting: Transmission valve body internal installation
• Fluid type: Automatic transmission fluid (ATF+4)
• Control type: ECU-controlled solenoid operation (on/off and PWM depending on function)
• Application environment: Automotive automatic transmission hydraulic system
• Configuration: Grey connector solenoid block pack (updated revision design)

Common Replacements:

• Mopar OEM 45RFE/545RFE/68RFE solenoid pack (latest grey connector revision)
• Sonnax RFE transmission valve body upgrade kit
• Dorman transmission solenoid block kit for RFE-series applications