GM Duramax LLY Y-Bridge Kit 2004.5-2005

The Duramax LLY Y-Bridge Kit is designed for 2004–2005 Duramax 6.6L engines to replace the factory intake bridge, which is known to have reliability issues under higher boost levels. This upgraded Y-bridge improves airflow and provides a stronger, more durable intake connection.

Built for high-boost and performance applications, the kit supports more consistent air delivery to the engine and helps reduce the risk of intake-related failures. It is a direct replacement designed to fit the LLY platform and is suitable for stock or modified engines.

Vehicle Compatibility

• Years: 2004.5-2005
• Makes: Chevrolet Silverado, GMC Sierra
• Models: 2500, 3500
• Engine: 6.6L Duramax LLY (diesel)
• Body: Pickup

Enhance Your Engine with the Duramax LLY Y Bridge Kit:

• Built to last with a heavy-duty design
• Precision mandrel-bent 3" aluminum intercooler pipe for optimal airflow
• Bead-rolled piping for secure sealing
• Not compatible with EGR system.
• Experience lower exhaust gas temperatures
• Equipped with heavy-duty spring clamps for durability
• 4 Ply silicone couplers for reliable connections
• Includes gaskets, seals, and silicone heater hoses
• Enjoy higher flow and lower turbulence airflow for increased power