RHG6 8973077111 Turbocharger for GMC Chevy Silverado Duramax LB7 6.6L
The RHG6 (8973077111) is an IHI turbocharger for the 2001-2004 GMC Sierra and Chevrolet Silverado 2500HD/3500 with the Duramax LB7 6.6L diesel V8. The LB7 was the first generation Duramax and the RHG6 is its stock turbo. This is a VGT turbo with electronically controlled variable vanes. Isuzu/IHI OEM 8973077111, GM OEM 97250514. Built new, dynamically balanced, ships with gaskets. We supply diesel shops and distributors.
Turbo Model
RHG6 (IHI, VGT)
OEM / Interchange Numbers
8973077111, 97250514, 97307711, 8973077110
Application
2001-2004 GMC Sierra / Chevrolet Silverado 2500HD/3500 Duramax LB7 6.6L
Service & Support
- 1-Year Warranty
- US Stock, Fast Dispatch
- Bulk Orders Welcome
- White-Label Support
- Fully Certified
Your Source for Quality Diesel Engine Parts
FAQ
The RHG6 (8973077111) fits the 2001-2004 GMC Sierra and Chevrolet Silverado 2500HD/3500 with the Duramax LB7 6.6L.
No. The 2004.5-2010 Duramax (LLY/LBZ/LMM) uses the Garrett GT3788VA. The LB7 uses the IHI RHG6. Different manufacturers, not interchangeable.
Brand new, dynamically balanced. No core charge. One-year warranty.
Yes. US stock, volume pricing for diesel shops and distributors.
RHG6 for Duramax LB7: The First-Gen Duramax Turbo
The LB7 Duramax (2001-2004) was GM’s first diesel V8 for the Silverado/Sierra HD trucks. It uses an IHI RHG6 VGT turbo — different from the Garrett turbos used on later Duramax generations (LLY, LBZ, LMM).
Duramax turbo timeline
| Years | Duramax | Turbo |
|---|---|---|
| 2001-2004 (this page) | LB7 | RHG6 (IHI VGT) |
| 2004-2010 | LLY/LBZ/LMM | GT3788VA (Garrett VGT) |
The LB7 uses an IHI turbo while all later Duramax generations use Garrett. They are not interchangeable.
Common LB7 turbo issues
- VGT vane sticking — soot buildup jams the variable vanes. Reduced power, DTC codes.
- Bearing wear — shaft play at 150k-250k miles.
- Unison ring wear — the ring that controls all vanes simultaneously wears over time.
Installation
- Direct bolt-on. Ships with gaskets.
- Flush oil feed line. Prime before startup.
- Verify VGT operation via scan tool.
See our quality process for details.
