This MagnaFlow OEM-grade manifold catalytic converter is the passenger-side close-coupled unit for the 2007-2010 Audi S6 5.2L V10. The one-piece spun 409 stainless body carries two O2 sensor ports and includes flange gaskets, bolts and nuts for installation. It meets Federal EPA requirements and is not legal in California or other CARB states.
Specifications
| Type | OEM-grade manifold catalytic converter |
| Position | Passenger-side close-coupled manifold (primary) |
| Material | 409 stainless steel |
| Emissions | Federal EPA (not legal in California / CARB states) |
| Includes | 2 flange gaskets, bolts, nuts |
| Part Number | 51181 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2007-2010 | Audi | S6 | Base |
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
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