MagnaFlow's California Grade CARB-compliant direct-fit catalytic converter 5571981 replaces the rear underbody converter and keeps the check-engine light off. The spun-body design and single laser-fusion weld replicate OE geometry to reduce leak points, while free-flowing mandrel-bent tubing and a compact low-mass body support thermal efficiency and smooth exhaust flow. High-strength 16-gauge 409 stainless steel tubing and 410 stainless barbed hangers resist corrosion for long service life. Installation requires no cutting or welding, and the included gaskets and hardware ensure a proper seal. This converter meets California Air Resources Board requirements under Executive Order D-193-137 for legal use in California and CARB-regulated states.
| Type | California Grade CARB-compliant Direct-Fit Catalytic Converter |
| Position | Rear (underbody) |
| Material | 409 Stainless Steel (16-gauge) |
| Emissions | California CARB compliant — EO# D-193-137 (legal in all 50 states) |
| Quantity | 1 |
| Part Number | 5571981 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2006-2009 | Ford | Fusion | SE |
| 2006-2009 | Ford | Fusion | SEL |
| 2006 | Lincoln | Zephyr | Base |
| 2006-2009 | Mercury | Milan | Base |
| 2006-2009 | Mercury | Milan | Premier |
