GM Duramax 6.6L EGR & Cooler Delete Kit (2011-2014)
Type: EGR Delete Kit | Fits: GM Duramax

The Duramax LML EGR Delete Kit is a proven upgrade for 2011–2014 GMC Sierra, Chevrolet Silverado 2500/3500, and Savana/Express Vans. This kit completely removes the restrictive factory EGR system, helping to improve performance, reliability, and efficiency—ideal for off-road and competition applications.
Vehicle Fitment
- ✅ 2011–2014 GMC Sierra 2500/3500HD (6.6L Duramax)
- ✅ 2011–2014 Chevrolet Silverado 2500/3500HD (6.6L Duramax)
- ✅ 2011–2014 Savana/Express 2500/3500/4500 Vans (6.6L Duramax)
- ⚠️ Early 2015 models may be compatible (verify before purchase)
- ❌ Not for Cab & Chassis applications
Specifications
Feature | Details |
---|---|
Application | EGR Valve & Cooler Delete Kit |
Material | High-strength components with hardware & gaskets included |
Install Time | 6–8 hours, no intake manifold removal required |
Performance Benefits | Reduced EGTs, faster turbo spool, improved coolant recirculation |
Compatibility | 2011–2014 Duramax 6.6L pickups & vans, early 2015 (verify fitment) |
Tuning Requirement | Requires custom tuning for proper functionality |
Use Case | Off-road & race applications only |
Key Benefits
- Improved Fuel Economy – Removing the EGR system reduces restrictions, allowing your engine to burn fuel more efficiently.
- Lower EGTs & Quicker Turbo Response – Enhances performance by improving airflow and reducing exhaust gas temperatures.
- Enhanced Engine Longevity – Less soot buildup and reduced engine stress help extend the life of your Duramax.
- Complete Kit – Includes all required gaskets and hardware for a smooth installation process.
- Off-Road Ready – Built for competition and off-road use; custom tuning is mandatory.
Installation Notes
- Can be installed in 6–8 hours with standard tools.
- Intake manifold does not need to be removed.
- While DIY installation is possible, professional installation is strongly recommended for correct fitment and tuning.
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.

