# MagnaFlow 5551172 Direct-Fit Catalytic Converter 5551172 for 2009-2012 Mercedes-Benz GL550, ML550

### Performance Overview

If you're looking to keep your engine running smoothly and that pesky check engine light at bay, the MagnaFlow Direct-Fit Catalytic Converter 5551172 is a solid choice. Crafted with precision, this converter features free-flowing mandrel-bent tubing and a robust stainless steel construction that stands up to corrosion. Installation is a breeze—just grab your tools, and you’re good to go—no cutting or welding required! What’s more, MagnaFlow employs advanced 3D scanning technology during the design phase, ensuring that this part fits and functions just like your original equipment. The single laser fusion weld minimizes the risk of leaks, while its compact design enhances thermal efficiency. Customers have noted how well it integrates with their vehicles, often remarking on the noticeable improvement in performance and emissions.

### Key Features

-   Brand: MagnaFlow
-   Part number: 5551172
-   Product type: Direct-Fit Catalytic Converter 5551172 for 2009-2012 Mercedes-Benz GL550, ML550
-   Designed for compatible vehicle applications listed on this page

### Vehicle Fitment

-   Mercedes-Benz Gl450 2009 - 2012 Base
-   Mercedes-Benz Gl550 2009 - 2012 Base
-   Mercedes-Benz Gl550 2012 4Matic
-   Mercedes-Benz Ml550 2009 - 2011 Base

### FAQ

**Will this fit my vehicle?**  
Please verify your year, make, model, position, and any fitment notes using the compatibility list above before purchase.

**What part number is this?**  
The listed part number is 5551172.

**Is this product designed for direct replacement?**  
Yes. This product is intended to match compatible vehicle applications listed in the fitment section.

**Should I confirm fitment before ordering?**  
Yes. Always compare your original part, position, and vehicle details with the fitment chart before ordering.

### Common Searches

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-   universal MagnaFlow Direct-Fit Catalytic Converter 5551172 for 2009-2012 Mercedes-Benz GL550, ML550

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

Mercedes-Benz Gl450 2009 - 2012 Base

Mercedes-Benz Gl550 2009 - 2012 Base

Mercedes-Benz Gl550 2012 4Matic

Mercedes-Benz Ml550 2009 - 2011 Base

## Details

- **Price:** 3243.65 CAD
- **Vendor:** MagnaFlow
- **Type:** Direct-Fit Catalytic Converter 5551172 for 2009-2012 Mercedes-Benz GL550, ML550
- **Tags:** 5551172, Auto Parts, Automotive, Catalytic Converter, Direct Replacement, Direct-Fit Catalytic Converter 5551172 for 2009-2012 Mercedes-Benz GL550, Exhaust Performance, Exhaust System, MagnaFlow, ML550, Muffler, Performance Exhaust, Performance Parts, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 3243.65 CAD | In stock |

## Images

- MagnaFlow 5551172 Direct-Fit Catalytic Converter 5551172 for 2009-2012 Mercedes-Benz GL550, ML550

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/magnaflow-catalytic-converter-universal-5551172)
> Updated: 2026-07-06