MagnaFlow CARB-Grade California-compliant direct-fit catalytic converter (5531719) for the 2006-2008 BMW Z4 3.0L (Coupe 3.0si, Roadster 3.0i and 3.0si). Spun-body 16-gauge 409 stainless construction with 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. Interchanges with OE part 18407545311. CARB EO compliant for legal use in California and CARB states for the listed vehicles.
| Type | Direct-fit catalytic converter (spun body) |
| Grade | CARB (California Grade) |
| Material | 16-gauge 409 stainless steel |
| Hardware | Gaskets and hardware included |
| OEM Replacement | 18407545311 |
| Emissions | CARB compliant (CA legal) |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2006-2008 | BMW | Z4 | Coupe 3.0si |
| 2006-2008 | BMW | Z4 | Roadster 3.0i |
| 2006-2008 | BMW | Z4 | Roadster 3.0si |
