Holset 5579127H Turbo Actuator | HE300VG | Cummins 6.7L ISB 2013+ | New

Genuine new Holset VGT turbo actuator, part number 5579127H, for Holset HE300VG turbochargers on 2013 and newer Cummins 6.7L ISB engines. Holset is the original equipment manufacturer for this actuator. The actuator positions the variable geometry vanes and operates the exhaust brake. This actuator requires calibration after installation — see the installation requirement below.

Key Features

• Genuine new OE Holset unit, not remanufactured or rebuilt
• For Holset HE300VG turbochargers specifically
• Controls variable vane position and exhaust brake operation
• Addresses a known failure point on the HE300VG turbocharger

Specifications

• Part number: 5579127H
• Base part number: 5579127
• Holset reman reference: 5579127HX
• Component type: VGT turbocharger actuator
• Condition: New
• Turbocharger: Holset HE300VG
• Engine: Cummins 6.7L ISB
• Model years: 2013 and newer
• Calibration: required after installation
• Sold as: each

Compatibility & Fitment

• Turbocharger: Holset HE300VG
• Engine: Cummins 6.7L ISB, 2013 and newer
• Vehicles: Ram 2500, 3500, 4500 and 5500

Fitment gate — this actuator is for the HE300VG turbocharger. 2007.5–2012 trucks use the HE351VE turbocharger and a different actuator. Confirm which turbocharger your truck has before ordering.

Second fitment gate — heavy-duty ISC and ISL 8.3L and 8.9L applications use a different HE300VG actuator with a threaded coolant hole in the end. Check the end of the actuator you are removing. If it has a threaded coolant port, this is not the correct part.

Installation requirement — this actuator must be calibrated to the turbocharger after installation. Calibration requires Cummins INSITE, the Holset E-Tool, or a capable scan tool. The job cannot be completed without calibration, and an uncalibrated actuator will not control vane position correctly. Plan on calibration as part of the repair.

Diagnostic note — a failed actuator commonly presents as a non-functioning exhaust brake, along with turbocharger-related fault codes. The actuator is a known failure point on the HE300VG, and it can often be replaced without removing the turbocharger.

Conclusion

This is the genuine new Holset VGT actuator for HE300VG turbochargers on 2013 and newer Cummins 6.7L ISB engines. Confirm your truck has the HE300VG rather than the earlier HE351VE, check for a threaded coolant port if yours is a heavy-duty application, and plan on calibration as part of the installation.