GM LML Duramax 6.6L - EGR Delete Shim Kit (2011-2016)
Type: EGR | Fits: GM Duramax
A simple way to block EGR flow and reduce soot buildup. This stainless steel EGR Blocker Shim Kit is designed for 2011–2016 GM 2500HD/3500HD trucks equipped with the 6.6L Duramax LML. It provides a straightforward EGR block-off solution using precision-cut shims—ideal for customers looking for a minimal, budget-friendly approach instead of a full delete kit.
For off-road/competition use only. Emissions-off tuning is required.
The EGR system routes exhaust gas back into the intake, which can contribute to soot accumulation over time. This shim-style blocker kit is built to stop that flow using durable stainless steel plates. It’s a clean, no-frills option designed for off-road applications when paired with the proper tuning to prevent check engine lights or drivability issues.
Vehicle Fitment
- 2011–2016 Chevrolet Silverado 2500HD / 3500HD – 6.6L Duramax LML
- 2011–2016 GMC Sierra 2500HD / 3500HD – 6.6L Duramax LML
Technical Specifications
| Product Type | EGR Blocker Shim Kit |
| Material | Stainless Steel |
| Design | Precision-Cut Blocker Shims |
| Use | Off-Road / Competition Only |
| Tuning Requirement | Emissions-Off Tuning Required |
| Installation | Basic Tools Required |
What’s Included
- Precision-cut stainless steel EGR blocker shims
Features
- Blocks EGR flow to reduce exhaust recirculation into the intake
- Shim-style design for a simple, minimal-parts install
- Stainless steel construction for heat and corrosion resistance
- Cost-effective alternative to full EGR delete systems
Benefits
- Helps reduce soot buildup associated with EGR recirculation
- Supports long-term reliability in off-road applications
- Quick installation with fewer components than full delete kits
- Budget-friendly option for customers building a basic off-road setup
Installation Notes
- Emissions-off tuning is required to avoid engine codes or limp mode.
- Designed specifically for 2011–2016 LML Duramax applications.
- Professional installation recommended if you are unfamiliar with EGR system components.
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.
