High-Flow Cold Air Intake System for 2007–2012 Hummer H3 & H3T 3.7L L5 – Optimized Performance & Maximized Airflow

Unlock the hidden potential of your Hummer H3 or H3T with this precision-engineered cold air intake system. Custom-designed for the 3.7L 5-cylinder engine, this upgrade replaces the restrictive factory air box with a free-flowing assembly that mounts directly to your throttle body. By streamlining the air path and providing a denser oxygen charge, this kit helps the engine operate more efficiently, resulting in better throttle response and a noticeable boost in overall power.

Standard intake components often prioritize silence over efficiency, creating internal bottlenecks that limit performance. This system utilizes premium 6061-T6 anodized aluminum piping to smooth out the airflow, allowing your Hummer to breathe freely during steep climbs or highway cruising. The result is a more capable driving experience, improved fuel efficiency, and a deep, aggressive mechanical tone that matches the rugged nature of the H3 series.

Key Features & Performance Benefits

• Increased Output: Engineered to provide measurable gains in horsepower and torque for improved acceleration.

• Premium Materials: Constructed with three 3" 6061-T6 lightweight aluminum pipes with a durable anodized finish.

• Optimized Filtration: Includes a blue chrome mesh high-flow washable micro cotton filter for superior debris protection and air volume.

• Direct Response: Mounts directly to the throttle body to sharpen throttle sensitivity and eliminate intake lag.

• Total Integration: Features a dedicated MAF sensor adapter and an included air breather filter for the vacuum hose to ensure proper sensor readings.

• Engine Tone: Enhances the induction roar of the 3.7L L5 engine, providing an authoritative sound under heavy load.

Vehicle Fitment

Fits All Models with 3.7L 5-Cylinder Engine

Hummer H3

2007 2008 2009 2010

Hummer H3T

2009 2010 2011 2012

What's Included

This comprehensive kit features three 3" premium aluminum intake pipes, a blue high-flow washable filter, black couplers, and all necessary clamps. It also includes the MAF sensor adapter, air breather filter, and basic installation instructions for a secure setup.

Installation Tip

Disconnect the NEGATIVE GROUND CABLE from the battery before starting the installation and keep it off for at least one minute after you finish. This reset allows the engine's computer to recognize the increased airflow volume and adjust the fuel mapping to optimize performance gains immediately.