MagnaFlow's OEM Grade manifold converter replaces the left bank close-coupled converter and exhaust manifold as a single one-piece bolt-in unit, so no cutting or welding is required. The spun uncoated body uses 16 gauge 409 stainless steel tubing with 308 stainless steel MIG welds over a ceramic substrate, measuring 19.75 in overall with an 8.25 in converter body, flange inlet and outlet connections, and one oxygen sensor port. A flat ring gasket, a flange gasket, two bolts, two nuts, and the outlet mounting hardware are included. This converter is built to Federal EPA standards and is not legal for sale or installation in California, Colorado, or New York.
Specifications
| Type | OEM Grade direct-fit manifold catalytic converter (one-piece, integrated exhaust manifold) |
| Position | Left bank, primary (close-coupled manifold converter) |
| Material | 16 gauge 409 stainless steel tubing, 308 stainless steel MIG welds |
| Body | Spun, uncoated stainless |
| Substrate | Ceramic |
| Overall Length | 19.75 in |
| Converter Body Length | 8.25 in |
| Inlet / Outlet | Flange / flange |
| Oxygen Sensor Ports | 1 |
| Emissions | Federal EPA compliant (49-state). Not CARB certified; not legal for sale or installation in California, Colorado, or New York |
| Included Hardware | (1) flat ring gasket, (1) flange gasket, (2) bolts, (2) nuts, outlet mounting hardware |
| Quantity | 1 |
| OEM Replacement | 25052-20240 |
| Part Number | 51540 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2008-2010 | Toyota | Highlander | Hybrid |
| 2008-2010 | Toyota | Highlander | Hybrid Limited |
| 2004-2006 | Toyota | Sienna | LE |
| 2006 | Toyota | Sienna | Limited |
| 2004-2006 | Toyota | Sienna | XLE |
| 2004-2005 | Toyota | Sienna | XLE Limited |
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
