# MagnaFlow 5451173 California Direct Fit Catalytic Converter for 2009-2012 Mercedes-Benz Gl450 and More

### Performance Overview

Magnaflow's California Catalytic Converter is designed to be CARB compliant. The catalytic converter's ribbed body is designed to minimize distortion and expansion of the body to hold the ceramic catalyst in place. magnaflow's Catalytic Converters are made of stainless steel and are backed by their limited lifetime warranty.

### Key Features

-   Brand: MagnaFlow
-   Part number: 5451173
-   Product type: California Direct Fit Catalytic Converter
-   Designed for compatible vehicle applications listed on this page

### Vehicle Fitment

-   2009 Mercedes-Benz Gl450, Note: Base; 4.7L
-   2010 Mercedes-Benz Gl450, Note: Base; 4.7L
-   2011 Mercedes-Benz Gl450, Note: Base; 4.7L
-   2012 Mercedes-Benz Gl450, Note: Base; 4.7L
-   2009 Mercedes-Benz Gl550, Note: Base; 5.5L
-   2010 Mercedes-Benz Gl550, Note: Base; 5.5L
-   2011 Mercedes-Benz Gl550, Note: Base; 5.5L
-   2012 Mercedes-Benz Gl550, Note: Base; 5.5L

### 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 5451173.

**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

-   California Direct Fit Catalytic Converter for Mercedes-Benz Gl450
-   5451173 fitment
-   MagnaFlow California Direct Fit Catalytic Converter
-   2009 Mercedes-Benz Gl450 California Direct Fit Catalytic Converter

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2009

Mercedes-Benz

Gl450

Base; 4.7L

2010

Mercedes-Benz

Gl450

Base; 4.7L

2011

Mercedes-Benz

Gl450

Base; 4.7L

2012

Mercedes-Benz

Gl450

Base; 4.7L

2009

Mercedes-Benz

Gl550

Base; 5.5L

2010

Mercedes-Benz

Gl550

Base; 5.5L

2011

Mercedes-Benz

Gl550

Base; 5.5L

2012

Mercedes-Benz

Gl550

Base; 5.5L

2009

Mercedes-Benz

Ml550

Base; 5.5L

2010

Mercedes-Benz

Ml550

Base; 5.5L

2011

Mercedes-Benz

Ml550

Base; 5.5L

## Details

- **Price:** 2454.85 CAD
- **Vendor:** MagnaFlow
- **Type:** California Direct Fit Catalytic Converter
- **Tags:** 2009 Mercedes-Benz Gl450, 2009 Mercedes-Benz Gl550, 2009 Mercedes-Benz Ml550, 2010 Mercedes-Benz Gl450, 2010 Mercedes-Benz Gl550, 2010 Mercedes-Benz Ml550, 2011 Mercedes-Benz Gl450, 2011 Mercedes-Benz Gl550, 2011 Mercedes-Benz Ml550, 2012 Mercedes-Benz Gl450, 2012 Mercedes-Benz Gl550, 5451173, Auto Parts, Automotive, California Direct Fit Catalytic Converter, Catalytic Converter, Direct Replacement, Exhaust Performance, Exhaust System, MagnaFlow, Magnaflow-5451173, Muffler, Performance Exhaust, Performance Parts, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2454.85 CAD | In stock |

## Images

- MagnaFlow 5451173 California Direct Fit Catalytic Converter

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/magnaflow-mercedes-benz-gl450-catalytic-converter-carb-5451173)
> Updated: 2026-07-16