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Cummins ISB QSB

HE351VE 3798327 Turbocharger for Cummins ISB QSB 6.7L

HE351VE

The HE351VE (3798327) is a Holset VGT turbocharger for the Cummins ISB and QSB 6.7L engines used in medium-duty trucks, buses, and commercial vehicles. This is a different application from the HE351VE 3799833 used in the 2007-2012 Dodge Ram pickup. The 3798327 variant covers ISB/QSB applications including Freightliner, International, and other Class 4-7 trucks, as well as school and transit bus platforms. Built new with all new components, dynamically balanced, ships with gaskets. We supply shops, fleets, and distributors.

Turbo Model

HE351VE (VGT, turbo only, no actuator)

OEM / Interchange Numbers

3798327, 3798327RX, 3798361, 3798378, 3879503, 4309307, 5328154, 5328172

Application

Cummins ISB, QSB 6.7L (medium-duty trucks, buses)

Service & Support

  • 1-Year Unlimited-Mileage Warranty
  • US Stock, Fast Dispatch
  • Bulk Orders Welcome
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FAQ

This HE351VE (3798327) fits Cummins ISB/QSB 6.7L engines in medium-duty commercial trucks and buses. The HE351VE 3799833 fits the 2007-2012 Dodge Ram 2500/3500. Same turbo model, different interchange numbers for different platforms.

Freightliner, International, and other Class 4-7 trucks, school buses, transit buses, and commercial vehicles running the Cummins ISB/QSB 6.7L.

No. Turbo assembly only. Reuse your existing actuator if functional, run ECM calibration.

Brand new, 100% new components, dynamically balanced. No core charge. One-year unlimited-mileage warranty.

Yes. US stock, volume pricing for shops, fleets, school districts, and distributors.

HE351VE 3798327 for Cummins ISB/QSB 6.7L Medium-Duty Applications

Cummins uses the HE351VE on both the Dodge Ram pickup truck (3799833) and on medium-duty ISB/QSB commercial applications (3798327, this page). The engine is essentially the same 6.7L ISB, but the turbo calibrations and interchange numbers differ between pickup truck and commercial truck/bus platforms.

3799833 (Dodge Ram) vs 3798327 (medium-duty) — which do you need?

Detail37998333798327 (this page)
Application2007-2012 Dodge Ram 2500/3500ISB/QSB medium-duty trucks, buses
Dodge part #68002428AAN/A (not a Dodge pickup)
Key Cummins #3799833, 4043137, 28820753798327, 3798378, 4309307, 5328154

If your vehicle is a Dodge/Ram pickup truck, use the 3799833. If it is a commercial truck (Freightliner, International, etc.) or bus, use this 3798327.

Common failure modes

  • VGT vane sticking — soot from EGR jams the vane ring. Derate codes, limp mode.
  • Actuator failure — electronic actuator motor or gears. Diagnose separately from turbo body.
  • Bearing wear — shaft play at 150k-300k miles on heavy-use commercial vehicles.

Installation

  • This listing does not include the electronic actuator. Reuse yours if functional, run ECM calibration.
  • Replace exhaust manifold and oil drain gaskets (included).
  • Flush oil feed line. Prime turbo before startup.
  • Idle 3-5 minutes. Verify VGT tracking via ECM.

See our quality process for details.

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