2011-2016 Duramax Cold Side Crossover Pipe w/ Throttle Valve (LML-INT-A029)

Note: This Pipe is designed for trucks with a throttle valve. Click Here for trucks without a throttle valve.

Select custom colors are not regularly stocked; please allow an ETA of 2-3 weeks for coating.

Improve intake flow on your 2011-2016 LML Duramax with the Dirty Diesel Customs Dirty Cold Side Crossover Pipe. This kit is a precision-engineered solution designed to replace the restrictive OEM intake on your diesel engine running with a throttle valve. By eliminating the rough, inefficient cast-aluminum intake, this kit improves airflow and reduces unnecessary restrictions, thereby optimizing efficiency. Its smooth interior finish and circular cross-section ensure improved flow dynamics compared to stock, while the four-axis CNC-machined flange seamlessly transitions airflow into the intake plenum. This design not only enhances performance but also simplifies the upgrade process with adaptability to both OEM and aftermarket intercooler piping.

Built from 6061 aluminum, TIG-welded, and powder-coated in-house, this kit is both durable and visually impressive. Whether you're upgrading for performance, reliability, or aesthetics, this kit is built to meet your needs while allowing flexibility for further modifications.

NOTE: This Product Deletes the Grid Heater.

Part Number: LML-INT-A029

Why Shop Dirty?

• Canadian-Made Performance: High-performing parts made in-house in our shop in West Kelowna and sourced from across North America with the highest quality standards.
• Born in the Shop: Our parts are engineered with real-world experience. Whether it's an OEM fix or a performance upgrade, we build what we know works. We make our parts to solve real-world problems.
• Dirty Made Quality: We aren’t just designing the kits; we are installing them every day in our own shop. We use our own products every day. From the first weld to the last bolt, we build tough gear that actually fits, handles abuse, and looks the part.

• Replaces restrictive OEM cast aluminum intake for improved airflow
• Smooth interior and circular cross-section minimize air boundary layer drag
• Four-axis CNC-machined flange ensures a smooth, efficient transition
• Eliminates the grid heater for reduced restrictions
• Quick coupler design provides compatibility with OEM or aftermarket intercooler piping
• 6061 aluminum construction with TIG-welded, high-quality welds
• Powder-coated finish with customizable color options

• (1) Cold Side Crossover Pipe w/ Throttle Valve

Click Here For Instructions