Cadillac CTS Catalytic Converter - Driver Side - Magnaflow - OEM Grade Direct-Fit - `03-`04
Cadillac CTS Catalytic Converter - Driver Side - Magnaflow - OEM Grade Direct-Fit - `03-`04

Available Options
Drive now, Pay later with Affirm
or with PayPal
Both options will be available upon checkout.

Cadillac CTS Catalytic Converter - Driver Side - MagnaFlow - OEM Grade Direct-Fit (`03-`04). A direct-fit replacement designed for the 2003–2004 Cadillac CTS driver side that restores proper emissions control while maintaining factory flow characteristics.
This MagnaFlow OEM Grade converter (part 51872) is built for drivers who want a reliable, Federal/EPA-compliant replacement that fits like the original. The spun-body design with a single laser fusion weld reduces leak potential, while compact, low-mass construction improves thermal efficiency. Mandrel-bent tubing and OE-like flow dynamics help preserve fuel economy and engine performance. The unit ships with gaskets and hardware to simplify installation—no cutting or welding required when installed with proper tools.
Features
- Direct-fit for 2003–2004 Cadillac CTS driver side (MagnaFlow 51872)
- Federal/EPA-compliant for OBDII-equipped vehicles
- Spun body with single laser fusion weld to reduce leaks
- Mandrel-bent tubing, OE-like flow to preserve performance
- 16-gauge 409 stainless steel tubing, 410 stainless steel hangers
- Includes gaskets and installation hardware; no cutting or welding required
If you have questions or want help verifying fitment, call us directly—our team can assist with fit, installation, or customization. We have two service locations offering installation and customization in Austin, Texas and the Los Angeles, California area: 512-982-9393 (TX) and 562-981-6800 (CA). If you are planning to purchase 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

















































