Mercedes-Benz S430 Catalytic Converter - Magnaflow - Direct Fit - `04-`05
Mercedes-Benz S430 Catalytic Converter - Magnaflow - Direct Fit - `04-`05
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Mercedes-Benz S430 Catalytic Converter - Magnaflow - Direct Fit - `04-`05 is a direct-fit replacement catalytic converter (MagnaFlow part 5411937) designed for 2004–2005 Mercedes-Benz S430 and S500 models. This California-grade, CARB-compliant unit restores proper emissions control and helps prevent a check engine light caused by a failing factory converter.
Built to match original equipment flow characteristics, this MagnaFlow converter features a spun-body design and precision R&D using 3D scanning to ensure a close fit and function. The unit uses mandrel-bent tubing and corrosion-resistant stainless construction to support long service life while preserving exhaust flow and engine performance. Installation is straightforward with included gaskets, hardware, and Torca AccuSeal-style clamps so no cutting or welding is required for the direct-fit application. The single laser fusion weld reduces leak potential and the compact, low-mass layout improves thermal efficiency compared with bulkier aftermarket replacements. This part interchanges with OE numbers 220 490 07 20 80 and 220 490 07 20 and is tested to meet CARB requirements for the listed vehicles (use only where the converter’s Executive Order and Engine Family Number apply).
Features
- MagnaFlow part 5411937 — CARB-compliant for listed 2004–2005 Mercedes models
- Direct-fit design: no cutting or welding required; includes gaskets and hardware
- Spun-body construction and precision fit from 3D-scanned R&D
- Mandrel-bent tubing and corrosion-resistant stainless construction
- Single laser fusion weld and Torca-style AccuSeal clamps for reduced leak risk
If you have questions or want help confirming fitment, call us directly — we’re happy to assist. We have two installation and customization locations: Austin, Texas and the Los Angeles, California area, and we install on premises at both locations. Call 512-982-9393 (TX) or 562-981-6800 (CA) for ordering, fitment checks, or to schedule installation. If you’re considering 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
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