6.6L Duramax LMM EGR Delete Kit with Up-pipe & Intake Pipe (2007.5-2010)

Overview

The LMM EGR Delete Kit with Up-Pipe & Intake Tube is designed for 2007.5–2010 GM trucks equipped with the 6.6L Duramax LMM engine. The system removes the factory EGR valve and cooler assembly, helping reduce soot contamination in the intake while improving exhaust flow. Built with stainless steel and aluminum components, this kit provides a durable solution for off-road trucks where eliminating common EGR failures is a priority.

Vehicle Compatibility

• Years: 2007.5–2010
• Makes: Chevrolet, GMC
• Models: Silverado 2500HD, Silverado 3500HD, Sierra 2500HD, Sierra 3500HD
• Engine: 6.6L Duramax LMM V8 Turbo Diesel

Technical Specifications

Key Features & Build Details

• Complete EGR System Removal – Eliminates the factory EGR valve and cooler assembly to prevent soot recirculation into the intake system.
• Stainless Steel Up-Pipe – TIG welded construction designed to withstand high exhaust temperatures and pressure while removing the restrictive EGR feed path.
• High-Flow Intake Elbow – Replaces the factory intake routing once the EGR system is removed, maintaining proper airflow into the intake manifold.
• Leak-Tested Components – Each piece is pressure tested and designed with O-ring sealing surfaces to help ensure leak-free installation.
• U-Shaped Coolant Tube – Allows proper coolant rerouting after the EGR cooler is removed from the engine.
• Durable Material Construction – Combination of aluminum, stainless steel, and silicone components built to handle the operating conditions of the Duramax platform.

Performance Benefits

• Reduced Intake Carbon Buildup – Eliminating exhaust gas recirculation helps prevent soot accumulation in the intake manifold and intake components.
• Improved Exhaust Flow – The included up-pipe removes the EGR restriction point in the exhaust path.
• Lower Operating Temperatures – Without hot exhaust being recirculated, the engine can maintain more stable coolant and combustion temperatures.
• Improved Engine Efficiency – Cleaner intake airflow supports more consistent combustion conditions.
• Eliminates Common EGR Failures – Removes components known for clogging or leaking on high-mileage LMM trucks.

Installation Notes

This kit is designed as a direct replacement for the factory EGR system components. Installation requires standard metric tools and moderate mechanical experience. Custom ECM tuning is required before installation to prevent engine fault codes. Intended for off-road use only.

Frequently Asked Questions

Q: Will this kit fit LBZ or LML Duramax engines?
A: No. This kit is specifically designed for the 2007.5–2010 6.6L Duramax LMM engine platform.

Q: Does this kit remove the entire EGR cooler system?
A: Yes. The kit removes the EGR valve, cooler, and associated exhaust routing.

Q: Is tuning required before installing this kit?
A: Yes. Custom ECM tuning is required before removing the EGR system to prevent diagnostic codes.

Q: What parts are included in the package?
A: The kit includes a stainless steel up-pipe, high-flow intake elbow, U-shaped coolant tube, exhaust block-off plate, hose clamps, O-ring, gaskets and installation hardware.