GM Duramax 6.6L EGR & Cooler Delete Kit (2011-2016)
Type: EGR Delete Kit | Fits: GM Duramax

Unlock improved performance and reliability with theΒ Duramax LML EGR Cooler Delete Kit, built specifically for 2011β2016 GMC Sierra and Chevrolet Silverado 2500/3500 trucks. This kit removes the restrictive EGR system, reducing carbon buildup, preventing common EGR-related failures, and boosting fuel economy. Ideal for off-road applications, this is a must-have upgrade for owners who want long-term engine protection and improved efficiency.
Vehicle Fitment
- β 2011β2016 GMC Sierra 2500/3500HD (6.6L Duramax LML)
- β 2011β2016 Chevrolet Silverado 2500/3500HD (6.6L Duramax LML)
- β Not compatible with Cab & Chassis models
Specifications
Feature | Details |
---|---|
Kit Type | Full EGR & Cooler Delete |
Construction | Includes precision hardware, gaskets, and block-off components |
Performance Gains | Improves airflow, reliability, and fuel efficiency |
Install Time | 6β8 hours (without removing intake manifold) |
Application | Off-road and competition use only |
Tuning Required | Yes β custom emissions-off tuning is required |
Key Features
- Full EGR System Removal: Eliminates the EGR cooler and valve to improve airflow and reduce engine stress.
- Boosts Reliability: Prevents clogging, leaking, and carbon buildup that cause engine failures.
- Fuel Economy Gains: Optimizes exhaust flow for more efficient fuel use.
- Complete Kit: Includes all required gaskets and hardware for a seamless installation.
- Durability: Designed to extend engine life and reduce long-term maintenance costs.
Installation Notes
- Installation typically takes 6β8 hours without removing the intake manifold.
- Professional installation highly recommended for proper fitment and tuning.
- Requires custom race tuning to operate correctly and maximize performance.
Important Notes:
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Your satisfaction is important to us. If you wish to return an item or request a refund, please review the terms and conditions outlined in our Returns Policy.
Important Notices
- OffβRoad Use Only
Products sold by JS Speed are intended for offβroad use and may be illegal on public roads where emissions or pollutionβcontrol 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 vehicleβs 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.

