MagnaFlow OEM-grade Federal/EPA-compliant direct-fit catalytic converter (52401) for the 2011-2015 Audi Q7 V6 3.0L. 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 and includes gaskets. Interchanges with OE parts 7L8 254 350 SX and 7L8 254 350 NX. Federal/EPA compliant (not for sale in California); OBDII.
Specifications
| Type | Direct-fit catalytic converter |
| Grade | OEM Grade |
| Material | 409 stainless steel (spun body) |
| Hardware | Gaskets included |
| OEM Replacement | 7L8 254 350 SX, 7L8 254 350 NX |
| Emissions | Federal/EPA compliant (not for sale in California) |
| Part Number | 52401 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2011-2015 | Audi | Q7 | Premium |
| 2011-2015 | Audi | Q7 | Premium Plus |
| 2011-2015 | Audi | Q7 | Prestige |
| 2011-2015 | Audi | Q7 | TDI Premium |
| 2011-2015 | Audi | Q7 | TDI Premium Plus |
| 2011-2015 | Audi | Q7 | TDI Prestige |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
