Cadillac CTS Catalytic Converter - Magnaflow - California Grade CARB Compliant - `09-`15
Cadillac CTS Catalytic Converter - Magnaflow - California Grade CARB Compliant - `09-`15

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Cadillac CTS Catalytic Converter - MagnaFlow - California Grade CARB Compliant - 2009-2015. A direct-fit replacement catalytic converter engineered to meet California emissions requirements for eligible 2009–2015 Cadillac CTS applications.
This MagnaFlow unit (part number 5421173) replicates OE spun-body design and uses mandrel-bent tubing and corrosion-resistant stainless steel for long service life. The compact, low-mass construction and single laser fusion weld reduce leak potential and support thermal efficiency. Designed for a bolt-on installation with the proper tools, this direct-fit converter requires no cutting or welding and ships with essential gaskets and hardware to simplify the swap. It has been developed using 3D scanning and metrology to ensure fit and function consistent with the original equipment.
Features
- Direct-fit for 2009–2015 Cadillac CTS (MagnaFlow part 5421173)
- California Grade CARB compliant — legal for sale in all 50 states when the EO and EFN appear on the converter’s CARB Executive Order
- Mandrel-bent tubing and OE-like geometry for consistent exhaust flow
- High-strength 16 gauge 409 stainless steel construction and spun-body design with single laser fusion weld
- Includes essential gaskets and hardware; no cutting or welding required for installation
If you have questions or need help confirming fitment, call us directly — we’re happy to assist. We maintain two service locations offering installation and customization: Austin, Texas and the Los Angeles, California area. Call Austin at 512-982-9393 (TX) or Los Angeles at 562-981-6800 (CA). If you’re considering purchasing multiple items, contact us for shipping discounts. We install on premises at both locations.
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov







































