What does 'HM Grade' mean for this catalytic converter?

HM Grade signifies that this catalytic converter is designed to meet or exceed Federal emissions requirements set forth by the EPA. It complies with legal standards for OBDII Federally registered vehicles with Federal/EPA Emission systems, helping to keep your check engine light off.

Does this catalytic converter come with installation hardware?

This is a universal catalytic converter that requires cutting and welding for installation. Hardware is not typically included, as the specific pipes and clamps needed will vary based on the exact vehicle application.

Is this catalytic converter legal in all states?

This Magnaflow catalytic converter is EPA-compliant but is not CARB approved. It cannot be shipped to California or used in states that have adopted California's emissions standards.

Magnaflow Universal Catalytic Converter 3.0in Inlet/Outlet 9

Name: Magnaflow Conv Univ 3.0in. GM 3.8L HM
Brand: Magnaflow
Price: 188.00 USD
Availability: InStock

Magnaflow Conv Univ 3.0in. GM 3.8L HM

$188.00

On Backorder

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

Magnaflow HM Grade Universal Catalytic Converter 99309HM. Keeps the check engine light off with EPA-compliant emissions control.

Key Features

Fits a wide range of GM vehicles, including Chevrolet and GMC trucks and SUVs.
HM Grade Federal/EPA Compliant design helps keep the check engine light off.
Constructed from high-strength 16-gauge 409 stainless steel for excellent corrosion resistance.
Single laser fusion weld minimizes the possibility of exhaust leaks.
Compact and lightweight design allows for installation in confined areas.
Designed to meet or exceed Federal emissions requirements for OBDII vehicles.

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Will this fit your vehicle?

Product Details

If you're dealing with a check engine light related to emissions on a wide range of GM vehicles, this Magnaflow HM Grade Universal Catalytic Converter is a solid option. It's designed to meet or exceed Federal emissions requirements for OBDII registered vehicles, helping you pass inspections and keep your vehicle running cleanly. This converter is built with a universal design, meaning it can be adapted to fit many different applications, including models like the Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD, among many others.

Constructed from high-strength 16-gauge 409 stainless steel, this converter is built to resist corrosion and last. The single laser fusion weld is a notable detail that greatly reduces the chance of exhaust leaks, ensuring a tight seal. Its compact and lightweight design also contributes to better thermal efficiency and makes it easier to install in tighter spaces, though cutting and welding are required for proper fitment. Magnaflow aims to replicate OEM-like flow dynamics, so you can expect your vehicle to maintain its factory performance and fuel efficiency.