MagnaFlow CARB-Grade direct-fit catalytic converter (4583078) for the 2003-2004 Ford Expedition 5.4L. Spun-body mandrel-bent 409 stainless tubing with a single laser-fusion weld replicates the OE design for smooth flow and a leak-resistant seal; installs with no cutting or welding, gaskets and hardware included. Meets California Air Resources Board requirements — legal in California and CARB-restricted states.
Specifications
| Type | Direct-fit catalytic converter |
| Grade | CARB Grade |
| Material | 409 stainless steel (spun body) |
| OEM Replacement | 4L1Z-5E212-BB, 3L1Z-5E212-CB |
| Emissions | CARB compliant (CA legal) |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2003-2004 | Ford | Expedition | Eddie Bauer |
| 2004 | Ford | Expedition | NBX |
| 2003-2004 | Ford | Expedition | XLT |
| 2004 | Ford | Expedition | XLT Sport |
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