Genuine Holset VGT Turbo Actuator – 6378204H

Fits Cummins ISL & Cummins ISC Engines

Upgrade or replace your failed actuator with a genuine Holset VGT turbo actuator, part number 6378204H. This is an OEM Holset electronic actuator, engineered for precise control of the variable geometry turbocharger on Cummins ISL and Cummins ISC diesel engines.

Holset VGT actuators are critical for proper turbo vane positioning, exhaust braking performance, boost control, and emissions compliance. Using a genuine Holset unit ensures correct calibration, long-term reliability, and compatibility with factory turbochargers

Key Features

• OEM Genuine Holset part – not aftermarket
• Designed specifically for Holset VGT turbochargers
• Provides accurate vane control for optimal boost and exhaust braking
• Direct replacement – no modification required
• Ideal for heavy-duty trucks, buses, RVs, and industrial applications
• Built to meet or exceed Cummins and Holset specifications

Engine Compatibility

• Cummins ISL
• Cummins ISC

(Always verify turbo model and actuator part number before ordering.)

Cross-Reference

This actuator replaces and cross-references the following part numbers:

• 4032822
• 4034123
• 403412300
• 403412300HX
• 4034123H
• 4034123RX
• 6378204
• 6378204H
• 6378204HX