GM Duramax 6.6L Intake Bridge (2011-2016)
Type: Intake Elbow | Fits: GM Duramax
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Smoother airflow. Stronger materials. Cleaner engine bay. This Intake Bridge Kit is designed for 2011–2016 GMC Sierra and Chevrolet Silverado 2500/3500HD trucks equipped with the 6.6L Duramax LML. Featuring mandrel-bent aluminum tubing and CNC-machined billet plates, this upgrade supports improved intake flow while retaining key factory cold-start components.
For off-road/competition use only.
The factory intake bridge and resonator design can limit airflow efficiency under load or tuned applications. This upgraded intake bridge replaces restrictive components with precision-formed aluminum tubing and billet block-off plates, helping promote smoother intake flow while maintaining the OEM heater grid and throttle valve for reliable cold starts.
Vehicle Fitment
- 2011–2016 GMC Sierra 2500HD / 3500HD – 6.6L Duramax
- 2011–2016 Chevrolet Silverado 2500HD / 3500HD – 6.6L Duramax
Not compatible with Cab & Chassis models.
Technical Specifications
| Product Type | Intake Bridge Kit |
| Tubing | Mandrel-Bent Aluminum |
| Plates | CNC-Machined Billet Aluminum |
| Cold-Start Function | Retains OEM Heater Grid & Throttle Valve |
| Kit Contents | Intake Bridge, Resonator Block-Off Plate, Hardware, Gaskets |
| Application | Off-Road / Competition Use Only |
What’s Included
- Mandrel-bent aluminum intake bridge
- CNC billet aluminum plates
- Resonator block-off plate
- Required gaskets and seals
- Complete hardware package
Features
- Optimized airflow design with smooth mandrel bends
- Billet aluminum components for strength and longevity
- Maintains OEM heater grid and throttle valve operation
- Direct-fit installation with no cutting or modification required
- Designed specifically for 2011–2016 LML Duramax applications
Benefits
- Improves intake efficiency and throttle response
- Supports performance in tuned or heavy-load applications
- Enhances durability compared to factory components
- Maintains cold-start reliability
- Provides a clean, performance-focused engine bay appearance
Installation Notes
- Installs using basic hand tools.
- No cutting or modification required.
- Professional installation recommended for best results.
- Verify local laws and regulations before purchasing.
Important Notes:
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Important Notices
- Off‑Road Use Only
Products sold by JS Speed are intended for off‑road use and may be illegal on public roads where emissions or pollution‑control laws apply. - Check Local Laws
Before purchasing or installing, verify all applicable local, state/provincial, and federal regulations to ensure the modification is legal in your area. - Professional Installation Recommended
These parts should be installed by qualified professional mechanics. Improper installation can cause performance issues or vehicle damage. Unless a product page explicitly states otherwise, installation instructions are not included. Components are designed for users with solid mechanical knowledge, and minor adjustments or modifications may be required for proper fitment. Returns or refunds cannot be accepted due to difficulty completing an installation or the absence of instructions. - Warranty Impact
Use of these parts may void your vehicle’s factory warranty. Confirm with your vehicle manufacturer before purchase and installation. - Limitation of Liability
JS Speed is not responsible for damage, failures, or issues arising from the use or installation of these products. - Product Images
Images are for illustration only and may differ from the actual product due to manufacturer updates or improvements. - No Performance Guarantees
While these products are designed to enhance performance, JS Speed does not guarantee specific performance results.
