MagnaFlow OEM-Grade Federal/EPA-compliant direct-fit catalytic converter (49790) for the 2004-2005 BMW 545i and 645Ci V8 (also fits 745i/745Li). Spun-body 409 stainless construction with mandrel-bent tubing and a single laser-fusion weld replicates the OE design for smooth flow and a leak-resistant seal; installs with no cutting or welding, and includes gaskets and hardware. Federal/EPA compliant — not legal for sale in California — for OBDII vehicles.
| Type | Direct-fit catalytic converter |
| Grade | OEM Grade |
| Material | 409 stainless steel (spun body) |
| Hardware | Gaskets and hardware included |
| OEM Replacement | 18 40 7 522 554 / 18 40 7 522 570 |
| Position | Right (passenger side) |
| Emissions | Federal/EPA compliant (not legal for sale in California) |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2005 | BMW | 545i | Base |
| 2004-2005 | BMW | 645Ci | Base |
| 2004-2005 | BMW | 745i | Base |
| 2004-2005 | BMW | 745Li | Base |
