Cummins Turbo Technologies 68445522AA Turbo Actuator

Description:

The Turbo Actuator for 2013–2017/18 Ram 2500/3500 6.7L Cummins (HE300VG) is used in variable geometry turbo (VGT) systems to electronically control turbo vane position for boost regulation, exhaust flow management, and engine performance optimization. Commonly installed on Cummins 6.7L diesel engines where precise turbocharger actuation is required for throttle response, emissions control, and fuel efficiency. Diesel technicians, fleet maintenance teams, and OEM service providers use this actuator for turbo system repair, over boost/under boost fault correction, and replacement of failed electronic VGT actuators. 

Applications:

The HE300VG turbo actuator is commonly used in Dodge Ram 2500, 3500, 4500, and 5500 trucks with 6.7L Cummins diesel engines where variable geometry turbocharging is required to control exhaust backpressure, improve low-end torque, support towing loads, and maintain emissions compliance in heavy-duty pickup and commercial applications.

Technical Specifications:

• Manufacturer: Cummins / Holset OEM or aftermarket replacement
• Model / Part number: 68445522AA (HE300VG turbo actuator)
• Product type: Electronic VGT turbocharger actuator
• Engine compatibility: 6.7L Cummins ISB diesel (2013–2018 applications)
• Turbo system type: Holset HE300VG variable geometry turbocharger
• Function: Controls vane position for boost pressure and exhaust flow regulation
• Operating voltage: 12V DC electronic actuator
• Construction: Electronic motor-driven actuator with position feedback sensor
• Control type: ECU-controlled closed-loop positioning system
• Mounting: Direct turbocharger housing mount
• Calibration: Requires electronic relearn/calibration after installation
• Application environment: Heavy-duty diesel turbocharging system
• Function role: Boost control, emissions control, engine response optimization

Common Replacements:

• Holset OEM HE300VG turbo actuator (Cummins 6.7L replacement unit)
• BorgWarner / Garrett VGT electronic actuator (heavy-duty diesel equivalent class)
• Dorman turbo actuator replacement for Ram Cummins 6.7L applications