S&B Turbo Inlet Manifold (76-1006B) for Duramax LLY 6.6L
$204.75
S&B Turbo Inlet Manifold 76-1006B for 2004.5–2005 Duramax LLY improves airflow into the turbo.
S&B Turbo Inlet Manifold 76-1006B
Turbo Inlet Upgrade for Duramax LLY (2004.5–2005)
The S&B Turbo Inlet Manifold 76-1006B fits 2004.5–2005 Duramax LLY 6.6L engines. It replaces the factory turbo inlet and provides a smoother path for air entering the turbocharger. Because of this, it supports more consistent airflow into the system.
Improved Airflow Path
This manifold features a larger, less restrictive inlet compared to the factory component. As a result, air moves more efficiently into the turbo. In addition, the smoother internal design helps reduce turbulence at the inlet.
Increased Air Volume Capacity
The larger inlet opening allows the system to move more air under load. Because of this, it supports engines that demand higher airflow. In addition, it helps maintain steady air delivery during acceleration and towing.
Integrated Water Methanol Port
S&B includes a built-in port for water methanol injection. As a result, you can add injection without modifying the manifold. In addition, the port placement allows for clean integration into your setup.
CNC Machined Flange for Proper Fit
The manifold uses a CNC machined flange for accurate fitment at the turbo connection. Because of this, it helps maintain a secure seal between components. In addition, proper alignment reduces the chance of boost leaks.
Durable Construction & Finish
S&B builds this manifold from aluminum and applies a protective finish. As a result, it handles heat and engine bay conditions. In addition, the finish helps resist corrosion over time.
Direct Replacement Installation
This manifold installs in place of the factory turbo inlet. Therefore, it uses existing mounting locations and connections. In addition, installation does not require fabrication.
Designed for Daily & Performance Use
You can run this upgrade on stock or modified trucks. Because of this, it works for daily driving, towing, or higher performance applications.
Why Upgrade the Turbo Inlet
Factory turbo inlets can restrict airflow at the turbo entry point. As a result, they can limit efficiency under load. Replacing the inlet improves airflow consistency into the turbo system.
Additional Fitment Notes
This manifold fits 2004.5–2005 Duramax LLY 6.6L engines. However, always confirm compatibility before installation.
Key Features
- Fits 2004.5–2005 Duramax LLY 6.6L
- Larger turbo inlet opening
- Integrated water methanol injection port
- CNC machined flange for proper fit
- Durable aluminum construction
- Direct replacement installation
Outbound Links (Fitment Relevant)
https://reviewdiesel.com/product-category/duramax-lly-2004-5-2005/
https://reviewdiesel.com/product-category/duramax-intake-components/
| Weight | 2.5 lbs |
|---|---|
| Dimensions | 9.25 × 6.5 × 6.25 in |
Fitment
| Year | Make | Model | Engine |
|---|---|---|---|
| 2004-2005 | Chevrolet | Silverado 2500 | 6.6L, Diesel, LLY |
| 2004-2005 | Chevrolet | Silverado 3500 | 6.6L, Diesel, LLY |
| 2004-2005 | GMC | Sierra 2500 | 6.6L, Diesel, LLY |
| 2004-2005 | GMC | Sierra 3500 | 6.6L, Diesel, LLY |
Installation
Warning
This product CANNOT be shipped to California!
Prop 65
WARNING: This product can expose you to chemicals, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

