MagnaFlow OEM-Grade Federal/EPA-compliant direct-fit catalytic converter (51231) for the 2010-2024 Toyota 4Runner and 2010-2014 Toyota FJ Cruiser 4.0L. 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, and it installs with no cutting or welding using the included gaskets. Interchanges with OE parts 17450-31111 and 17450-31190. Federal/EPA compliant (not for sale in California); for OBDII vehicles.
| Type | Direct-fit catalytic converter |
| Grade | OEM Grade |
| Material | 409 stainless steel (spun body) |
| Hardware | Gaskets included |
| OEM Replacement | 17450-31111, 17450-31190 |
| Emissions | Federal/EPA compliant (not for CA) |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2023 | Toyota | 4Runner | 40th Anniversary Edition |
| 2010-2024 | Toyota | 4Runner | Limited |
| 2020-2021 | Toyota | 4Runner | Nightshade |
| 2010-2024 | Toyota | 4Runner | SR5 |
| 2018-2024 | Toyota | 4Runner | SR5 Premium |
| 2010-2016,2021-2022 | Toyota | 4Runner | Trail |
| 2017-2024 | Toyota | 4Runner | TRD Off-Road |
| 2018-2024 | Toyota | 4Runner | TRD Off-Road Premium |
| 2015-2024 | Toyota | 4Runner | TRD Pro |
| 2022-2024 | Toyota | 4Runner | TRD Sport |
| 2020-2021 | Toyota | 4Runner | Venture |
| 2010-2014 | Toyota | FJ Cruiser | Base |
