2004-2005 Duramax LLY 6.6L S&B Cold Air Intake

S&B Cold Air Intake (2004–2005 Duramax LLY 6.6L)

The S&B Cold Air Intake for the 2004–2005 Chevy/GMC Duramax LLY 6.6L is engineered to reduce restriction and improve airflow, flowing 43.69% better than stock. It’s designed for better throttle response, improved performance, and long-term engine protection.

This kit features a fully enclosed airbox to keep engine heat out while protecting the filter from dirt and debris. The airbox also includes an additional intake opening on the bottom for maximum airflow, along with a large silicone fender seal to prevent hot under-hood air from entering the system.

A large high-efficiency air filter is included to improve airflow while protecting the engine.

Features

• Flows 43.69% better than stock

• Fully enclosed airbox keeps heat out and filter protected

• Additional bottom air inlet for maximum airflow

• Silicone fender seal helps block hot air

• Includes large high-efficiency air filter

• Snap-in clear lid for quick filter inspection and easy service

Filter Options

Choose your filter style at checkout:

• Dry cotton filter

• Cleanable filter

Easy Maintenance

The LLY intake includes S&B’s signature snap-in clear lid, making it easy to inspect and service the filter. Simply remove the lid using the pull tab and loosen the filter clamp for quick access.