Will this catalytic converter keep my check engine light off?

Yes, this MagnaFlow catalytic converter is designed to meet or exceed California Air Resource Board (CARB) requirements. It is engineered to function correctly with your vehicle's emissions system, helping to prevent the check engine light from illuminating due to emissions faults.

Do I need to weld or cut anything to install this converter?

No, this is a direct-fit catalytic converter. It is designed to bolt directly in place of your original equipment, meaning no cutting or welding is required for installation when using the proper tools.

What is included with this catalytic converter?

This MagnaFlow catalytic converter includes an O2 port plug, a donut gasket, and a flange gasket to help ensure a proper seal during installation. The high-strength stainless steel construction and laser fusion weld are also key features.

2007-2008 Hummer H3 Catalytic Converter | Magnaflow 5481353

Name: MagnaFlow Conv DF 07-08 Hummer H3 3.7L
Brand: Magnaflow
Price: 1429.00 USD
Availability: InStock

MagnaFlow Conv DF 07-08 Hummer H3 3.7L

$1429.00

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2007-2008 Hummer H3. MagnaFlow direct-fit catalytic converter keeps your check engine light off and meets CARB requirements.

Key Features

Fits 2007-2008 Hummer H3.
Constructed with high-strength 16-gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life.
Designed to replicate OE-like flow dynamics, maintaining factory performance and fuel efficiency.
CARB-compliant for legal use in California and other restricted states.
Direct-fit design requires no cutting or welding for installation.
Features a single laser fusion weld on a replicated OE spun body design to reduce leak possibilities.

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Will this fit your vehicle?

Product Details

Starting with a high-strength 16-gauge 409 stainless steel tubing construction, this MagnaFlow catalytic converter is built to last and resist corrosion, ensuring a long service life for your 2007-2008 Hummer H3. This direct-fit unit is designed to keep your check engine light off and meet the stringent California Air Resource Board (CARB) requirements, making it legal for use in California and other CARB-restricted states. MagnaFlow uses advanced 3D scanning during their research and development to ensure this converter replicates the original equipment's fit and function precisely.

The design mimics the OE spun body, featuring a single laser fusion weld that significantly reduces the chance of exhaust leaks. Its compact, low-mass construction also contributes to greater thermal efficiency. Installation is made straightforward because this converter is designed as a direct-fit solution, meaning no cutting or welding is required when you use the proper tools. You can be confident in its performance, as MagnaFlow has tested it to meet or exceed CARB guidelines.

This converter comes with essential gaskets and an O2 port plug to help ensure a proper seal and simplify the installation process. It's a well-built replacement part that maintains factory performance and fuel efficiency while addressing emissions standards.