MagnaFlow 5481108 is the front, primary three-way catalytic converter assembly for the 4.6L Explorer and Mountaineer, carried under CARB Executive Order D-193-177. It is a single dual-inlet, single-outlet unit with two spun ceramic catalyst bodies of 9 in and 11 in, four sensor ports and 2.5 in flanged inlets and outlet, measuring 54.5 in overall. Construction is 16 gauge 409 stainless steel tubing with 308 stainless MIG welds and 410 stainless barbed hangers. Gaskets and hardware are included, and the spun body design installs without cutting or welding. It is legal for sale and use in all 50 states, including California, Colorado, New York and Maine, where the vehicle's Executive Order number matches.
Specifications
| Type | California grade CARB compliant direct-fit three-way catalytic converter |
| Position | Primary (front, upstream); single assembly carrying both banks, not side specific |
| Material | 16 gauge 409 stainless steel tubing, spun stainless body, ceramic substrate |
| Size | 54.5 in overall length, 2.5 in inlet and outlet, dual inlet / single outlet, 4 sensor ports |
| Quantity | 1 converter assembly |
| Part Number | 5481108 |
| Warranty | 5 years / 50,000 miles construction and emissions |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2005 | Ford | Explorer | Eddie Bauer |
| 2004-2005 | Ford | Explorer | Limited |
| 2004 | Ford | Explorer | NBX |
| 2004-2005 | Ford | Explorer | XLT |
| 2004-2005 | Ford | Explorer | XLT Sport |
| 2004 | Mercury | Mountaineer | Base |
| 2005 | Mercury | Mountaineer | Convenience |
| 2005 | Mercury | Mountaineer | Luxury |
| 2004-2005 | Mercury | Mountaineer | Premier |
Shipping
- Orders placed before 3 PM EST typically ship the same business day. Larger items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
- 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 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Returns & Refunds · Warranty
