GM Duramax LLY 6.6L EGR Kit (2004.5–2005)

The GM LLY Duramax EGR Block-Off Kit is a reliable solution designed to disable the factory EGR system on 2004.5–2005 GMC Sierra and Chevy Silverado 2500/3500 HD trucks equipped with the 6.6L LLY engine. Intended for off-road and racing applications, this kit prevents exhaust gases from recirculating, reducing soot buildup and enhancing overall engine performance.

Key Features:

• Complete EGR System Block-Off: Stops exhaust gases from re-entering the intake, helping to lower carbon buildup.

• Durable Build: Manufactured from high-quality materials designed to withstand high heat and demanding conditions.

• All-Inclusive Kit: Contains all parts necessary for a seamless installation with no additional components required.

Benefits:

• Cleaner Intake: Reducing soot accumulation improves airflow and combustion efficiency.

• Enhanced Reliability: Eliminates a common source of engine issues on the LLY Duramax platform related to EGR system failures.

• Performance Improvements: Lowers intake heat and backpressure, leading to improved throttle response and engine output.

• Requires Emissions-Off Tuning: For off-road use only; proper tuning is essential to avoid engine codes and maintain performance.

Installation & Compatibility:

• Specifically designed for 2004.5–2005 GMC Sierra and Chevy Silverado 2500/3500 HD trucks with the 6.6L LLY Duramax engine.

• Straightforward installation with standard hand tools, ideal for skilled DIYers and professional shops.