What does 'direct-fit' mean for this catalytic converter?

Direct-fit means this catalytic converter is designed to bolt directly in place of your original equipment. No cutting or welding is required, simplifying the installation process when you have the proper tools.

Is this catalytic converter legal in all states?

This catalytic converter is EPA-compliant and meets Federal emissions requirements. However, it is not CARB approved and cannot be shipped to California.

What hardware is included with this catalytic converter?

This MagnaFlow catalytic converter includes eight bolts and one donut gasket. These are provided to help ensure a proper seal and avoid reusing corroded factory parts during installation.

2006-2009 Cadillac STS Catalytic Converter

Name: MagnaFlow Conv DF 06-09 Cadillac STS 4.4L Passenger Side
Brand: Magnaflow
SKU: magnaflow-magnaflow-conv-df-06-09-cadillac-sts-4-4l-passenger-side-t14-4335316
Price: 632.00 USD
Availability: BackOrder

MagnaFlow Conv DF 06-09 Cadillac STS 4.4L Passenger Side

$632.00

On Backorder

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

Fits 2006-2009 Cadillac STS. Magnaflow direct-fit catalytic converter helps keep the check engine light off with EPA-compliant performance.

Key Features

Fits 2006-2009 Cadillac STS.
This is the passenger side catalytic converter.
Built with high-strength 16-gauge 409 stainless steel tubing for corrosion resistance and long service life.
Mandrel-bent tubing helps eliminate flow restrictions, maintaining factory performance and fuel efficiency.
Features durable 308 stainless steel MIG welds for a strong connection.
Direct-fit design means no cutting or welding is required for installation.

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Product Details

If you're working on a 2006-2009 Cadillac STS with the 4.4L engine and need to replace the passenger side catalytic converter, this MagnaFlow direct-fit unit is a solid choice. It's designed to meet Federal emissions requirements, helping to ensure your check engine light stays off and your vehicle passes emissions tests. MagnaFlow uses advanced 3D scanning to make sure this converter matches the original equipment's fit and function, so you won't have to worry about it not lining up correctly.

This converter is built with 16-gauge 409 stainless steel tubing, which is known for resisting corrosion and giving you a long service life, especially important for exhaust components. The tubing is mandrel-bent to eliminate restrictions, meaning exhaust gases can flow freely, maintaining your engine's performance and fuel efficiency like the factory setup. MagnaFlow also uses durable 308 stainless steel for their MIG welds, and a single laser fusion weld helps prevent leaks. The compact design also aids in thermal efficiency.

Installation is made easier because this is a direct-fit unit, meaning no cutting or welding is required if you have the right tools. MagnaFlow includes the necessary gaskets and hardware, so you won't have to reuse old, corroded parts or worry about finding compatible seals. Just remember, this converter is EPA-compliant but not CARB approved, so it cannot be shipped to California.