MagnaFlow OEM-grade, Federal/EPA-compliant direct-fit underbody catalytic converter (52172) for the 2007-2012 Mercedes-Benz GL450/GL550 and 2008-2011 ML550. Spun-body 409 stainless with mandrel-bent tubing replicates the OE design for smooth flow and a leak-resistant laser-fusion weld; installs with no cutting or welding. Meets Federal EPA emissions standards (not CARB / not for CA-emissions vehicles).
| Type | Direct-fit catalytic converter (underbody) |
| Material | 409 stainless, spun body |
| OEM Replacement | 164 490 51 36, 164 490 52 36 |
| Emissions | Federal/EPA compliant (not for CA) |
| Part Number | 52172 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2007-2012 | Mercedes-Benz | GL450 | Base |
| 2008-2012 | Mercedes-Benz | GL550 | Base |
| 2008-2011 | Mercedes-Benz | ML550 | 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.
