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.
| 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: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
