Is this catalytic converter legal in California?

Yes, this MagnaFlow catalytic converter is California CARB compliant. It has undergone additional testing to meet CARB guidelines, making it legal for use in California and other states with restricted emissions requirements.

What is included with this catalytic converter?

This direct-fit catalytic converter includes a crush ring gasket and a Torca AccuSeal exhaust clamp. These components help ensure a proper seal during installation.

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

No, this is a direct-fit catalytic converter designed for easy installation. With the proper tools, you can install it without any cutting or welding, as it's made to bolt directly in place of the original equipment.

MagnaFlow Catalytic Converter Direct Fit Hummer H2

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Specifications

Brand: Magnaflow
Part #: 4451218
UPC: 888563104522

MagnaFlow Catalytic Converter Direct Fit Hummer H2

Name: MagnaFlow Catalytic Converter Direct Fit Hummer H2
Brand: Magnaflow
Price: 882.00 USD
Availability: InStock

$882.00

On Backorder

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

Fits 2003 Hummer H2. MagnaFlow's CARB-compliant catalytic converter helps keep your check engine light off with a direct-fit design.

Key Features

Fits 2003 Hummer H2.
This catalytic converter is California CARB compliant, meeting strict emissions requirements for legal use in California and other restricted states.
Constructed with strong 409 stainless steel tubing for excellent corrosion resistance and a long service life.
Features free-flowing, mandrel-bent tubing that retains the OEM-like design for smooth exhaust flow and efficient operation.
Built with 308 stainless steel MIG welds for added durability.
Replicates OE design with a single laser fusion weld to greatly reduce the possibility of leaks.

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Fits this vehicle

Hummer H2 2003

Product Details

MagnaFlow is known for making exhaust components that flow well and last a long time. This direct-fit catalytic converter is built specifically for your 2003 Hummer H2, designed to help keep your check engine light off and meet emissions standards.

This converter uses free-flowing, mandrel-bent tubing to maintain smooth exhaust flow, which helps with both performance and fuel economy. It's constructed from strong, corrosion-resistant 409 stainless steel tubing, and the welds are made with 308 stainless steel for durability. MagnaFlow uses advanced 3D scanning in their research, so this converter is made to fit just like the original equipment. The OE-style spun body design with a single laser fusion weld helps prevent leaks, and its compact size allows for good thermal efficiency.

This is a California Air Resource Board (CARB) compliant converter, meaning it's legal for use in California and other states with strict emissions requirements. Installation is made easier because it's a direct-fit part – no cutting or welding is needed, just use the proper tools. It comes with the necessary gaskets and a Torca clamp to help ensure a proper seal and a leak-free installation.