MagnaFlow 21-486 is an OEM Grade Federal/EPA compliant direct-fit catalytic converter for the right (passenger) bank, replacing the underbody converter and pipe assembly as one spun body unit. A 2.25 in flanged inlet and 3.0 in outlet span 45.75 in overall around a 10.25 in ceramic substrate converter body, with two oxygen sensor ports at the pre-converter and midbed positions. Tubing is 16 gauge 409 stainless steel joined by 308 stainless MIG welds and hung on 410 stainless barbed hangers, and the OE spun body geometry is reproduced from 3D scans so it drops onto the factory flanges without cutting or welding. This is a Federal/EPA 49-state part and is not CARB certified.
Specifications
| Type | OEM Grade Federal/EPA compliant direct-fit catalytic converter |
| Position | Right (passenger) bank, secondary / underbody |
| Material | 16 gauge 409 stainless steel tubing, 308 stainless MIG welds, 410 stainless hangers |
| Substrate | Ceramic |
| Inlet | 2.25 in, flange |
| Outlet | 3.0 in |
| Overall Length | 45.75 in |
| Converter Body | 10.25 in L x 3.625 in diameter, round spun body |
| Oxygen Sensor Ports | 2 (pre-converter and midbed) |
| Air Tube | None; not air tube adaptable |
| Emissions Compliance | Federal/EPA 49-state. Not CARB certified; not legal for sale or installation in California, Colorado or New York |
| Quantity | 1 (one bank) |
| Part Number | 21-486 |
| OEM Replacement | 166 490 16 14, 166 490 16 14 80 |
| Pairs With | MagnaFlow 21-485 (left / driver bank) |
| Warranty | 5 years / 50,000 miles construction; 25,000 miles emissions |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2013-2014 | Mercedes-Benz | GL450 | Base |
| 2013-2016 | Mercedes-Benz | GL550 | 4Matic |
| 2013-2016 | Mercedes-Benz | GL63 AMG | Base |
| 2016-2019 | Mercedes-Benz | GLE63 AMG | 4Matic |
| 2016-2019 | Mercedes-Benz | GLE63 AMG S | 4Matic |
| 2017-2019 | Mercedes-Benz | GLS550 | 4Matic |
| 2017-2019 | Mercedes-Benz | GLS63 AMG | Base |
| 2012-2014 | Mercedes-Benz | ML550 | Base |
| 2012-2015 | Mercedes-Benz | ML63 AMG | Base |
Shipping
- Orders placed before 3 PM ET 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
