Performance Air Intake For Hummer H3 (2007-2010) With 3.7L L5 Engine Black

Maximize Throttle Response: Performance Air Intake for Hummer H3 & GM 3.7L Atlas LLR

Who It’s For: Designed specifically for 2007-2010 Hummer H3 owners running the 3.7L Atlas LLR engine. This is for the enthusiast who wants to hear the unique inline-five growl and eliminate the sluggish low-end response common in these mid-sized SUVs.

The Problem: The Atlas LLR is a robust, high-revving engine, but it is severely choked by the factory air box and its massive plastic resonator. This stock setup is designed for silence, not efficiency, creating turbulent air and trapping engine bay heat. This leads to a "mushy" throttle feel and reduced efficiency when you’re trying to merge or climb a grade.

The Solution: We engineered this intake to streamline the induction path directly to the throttle body. By replacing the baffled stock plumbing with a high-flow mandrel-bent tube and an open-element filter, we provide your Atlas LLR with a consistent, high-velocity air supply. This results in sharper acceleration and more efficient power delivery throughout the RPM range.

Why This is the Ultimate Upgrade

• Optimized Airflow: Removes the restrictive factory resonator box to provide a straight-shot path to the intake manifold for better volumetric efficiency.
• Rugged Construction: Built with high-grade, black powder-coated piping and heat-resistant couplers to withstand the vibration and temperatures of off-road or daily driving.
• Zero-Stress Installation: A true bolt-on kit that utilizes factory mounting points. No drilling or heavy fabrication is required for the GMT355 or H3 chassis.

Technical Specifications

Compatibility & OEM Reference

Fits the Following Vehicles:

• 2007-2010 Hummer H3 3.7L L5

Interchange Part Numbers:

3.7L, 3654CC, 223Cu. In., L5, DOHC, LLR, GMT355, H3-37-2007

The Performance Promise

Buy with confidence. As specialists in the GM Atlas engine platform, we know these 5-cylinders need to breathe to perform. Our kits are tested for fitment and longevity. Backed by real automotive experts and fast shipping.

Common Questions

Will this air intake fit my 2006 Hummer H3?
This kit is built specifically for the Hummer H3 equipped with the 3.7L Atlas LLR inline-5 engine (offered 2007-2010 in the H3); the 2006 model year uses the 3.5L engine.

Does this intake fit the Hummer H3 Alpha with the 5.3L V8?
This intake system is designed specifically for the 3.7L inline-5 (Atlas LLR) engine configuration.

What is included in this intake kit?
The kit includes black powder-coated mandrel-bent intake piping, an open-element high-flow air filter, and heat-resistant couplers.

Is any drilling or cutting required for installation?
Installation is a direct bolt-on upgrade that uses the factory mounting points with no drilling or heavy fabrication required.

What factory components does this intake replace?
It replaces the baffled stock intake plumbing and restrictive plastic factory resonator box to provide a direct airflow path to the throttle body.