MagnaFlow OEM-Grade Federal/EPA-compliant direct-fit catalytic converter (51323) for the 2005-2009 Lexus GX470 and Toyota 4Runner 4.7L. 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 17150-50050. Federal/EPA compliant (not for sale in California) for OBDII vehicles.
Specifications
| Type | Direct-fit catalytic converter |
| Grade | OEM Grade |
| Material | 16-gauge 409 stainless steel (spun body) |
| Hardware | Gaskets & hardware included |
| OEM Replacement | 17150-50050 |
| Emissions | Federal/EPA compliant (not for CA) |
| Part Number | 51323 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2005-2009 | Lexus | GX470 | Base |
| 2004-2009 | Toyota | 4Runner | Limited |
| 2004-2009 | Toyota | 4Runner | Sport |
| 2004-2009 | Toyota | 4Runner | SR5 |
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
