aFe 46-20118 BladeRunner Cold-Side 3" Intercooler Tube for 11-16 GM Dura

Vehicle Fitment

• 2011-2016 Chevrolet Silverado 2500/3500 HD (6.6L Duramax LML)
• 2011-2016 GMC Sierra 2500/3500 HD (6.6L Duramax LML)

Features

• BladeRunner cold-side intercooler tube to improve airflow efficiency
• 3" mandrel-bent aluminum construction for smooth airflow and strength
• Wrinkle-black powder-coated finish for heat resistance and corrosion protection
• Includes premium stainless-steel T-bolt clamps and heavy-duty silicone couplings
• 1/8" NPT port for auxiliary sensors or water/methanol injection integration
• Outflows stock intercooler tube by ~6 % for improved performance
• Direct replacement that works with OEM or aFe intercooler systems
• Laser-cut aFe Power logo plate welded on for style and identity

Specifications

• Part Number: 46-20118
• Type: Cold-side intercooler tube
• Tube Diameter: ~3" (76 mm)
• Material: Mandrel-bent aluminum
• Finish: Wrinkle black powder coat
• Fitment: 2011-2016 GM 6.6L Duramax LML diesel
• Mounting: Uses factory locations - no modification required
• Port: One 1/8" NPT for sensor or injection options

Included Components

• 1x Cold-side intercooler tube
• 2x Heavy-duty silicone couplings
• 2x Stainless-steel constant-tension T-bolt clamps
• All required mounting hardware

Product Description

The aFe **46-20118 BladeRunner Cold-Side Intercooler Tube** is a direct-fit performance upgrade designed for **2011-2016 Chevrolet Silverado and GMC Sierra 2500/3500 HD trucks** powered by the **6.6L Duramax LML diesel engine**. This upgraded intercooler tube replaces the stock cold-side charge pipe with a **3" mandrel-bent aluminum tube** that reduces airflow restrictions and smooths transitions, helping to improve turbo efficiency and engine response. The design outflows the factory tube by approximately **6 %,** which can contribute to gains in horsepower and torque while also helping to lower intake air temperatures under boost.

Finished in a durable **wrinkle-black powder coat** to protect against heat and corrosion, this intercooler tube includes **premium stainless-steel T-bolt clamps** and **heavy-duty silicone couplings** for a secure, leak-free installation using factory mounting locations. A built-in **1/8" NPT port** allows the addition of a pressure sensor or water/methanol injection, offering tuning flexibility. Whether paired with the OEM intercooler or an upgraded aFe intercooler, this BladeRunner tube provides enhanced airflow performance and a stylish under-hood upgrade for diesel enthusiasts.