MagnaFlow OEM-Grade Federal/EPA-compliant direct-fit catalytic converter (51849) for the 2000-2004 Audi A6 Quattro and 2002-2003 Audi S6 4.2L, driver (left) side. 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. Interchanges with OE parts 4B3 253 057 AX, 4B3 253 057 BX, 4B3 254 500 CX, 4B3 254 500 GX. Federal/EPA compliant (not for sale in California). OBDII.
| Type | Direct-fit catalytic converter |
| Grade | OEM Grade |
| Material | 409 stainless steel (spun body) |
| Hardware | Gaskets and hardware included |
| OEM Replacement | 4B3 253 057 AX, 4B3 253 057 BX, 4B3 254 500 CX, 4B3 254 500 GX |
| Position | Driver (left) side |
| Emissions | Federal/EPA compliant (not for sale in California) |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2000-2004 | Audi | A6 Quattro | Base |
| 2002-2003 | Audi | S6 | Avant |
