# MagnaFlow 51476 Direct Fit OEM Grade Catalytic Converter (2.5" ID/2.5" OD) for 2009-2010 Hummer H3 and More

### Performance Overview

The Magnaflow OEM Grade Catalytic Converters are the perfect replacement for your stock converter. They are crafted from high-quality stainless or aluminized steel for maximum durability. They are seam-welded for unbreakable bonds with no risk of vibrations. The catalytic converters are available with a lap inserted in the point where the neck meets the catalytic converter body. The neck is carefully formed to be sure that it doesn't reach the body where it can cause trouble to the exhaust flow. As an additional safety feature, the Catalytic Converter has a heavy duty heat shield to protect it against extreme heat and give additional stability.

### Key Features

-   Brand: MagnaFlow
-   Part number: 51476
-   Product type: Direct Fit OEM Grade Catalytic Converter (2.5" ID/2.5" OD)
-   Designed for compatible vehicle applications listed on this page

### Vehicle Fitment

-   2009 Hummer H3, Note: Base, X; 3.7L; 2.50"; 2.50"
-   2010 Hummer H3, Note: Base; 3.7L; 2.50"; 2.50"
-   2009 Hummer H3T, Note: Base; 3.7L; 2.50"; 2.50"
-   2010 Hummer H3T, Note: Base; 3.7L; 2.50"; 2.50"

### 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 51476.

**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

-   Direct Fit OEM Grade Catalytic Converter (2.5" ID/2.5" OD) for Hummer H3
-   51476 fitment
-   MagnaFlow Direct Fit OEM Grade Catalytic Converter (2.5" ID/2.5" OD)
-   2009 Hummer H3 Direct Fit OEM Grade Catalytic Converter (2.5" ID/2.5" OD)

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2009

Hummer

H3

Base, X; 3.7L; 2.50"; 2.50"

2010

Hummer

H3

Base; 3.7L; 2.50"; 2.50"

2009

Hummer

H3T

Base; 3.7L; 2.50"; 2.50"

2010

Hummer

H3T

Base; 3.7L; 2.50"; 2.50"

## Details

- **Price:** 565.5 CAD
- **Vendor:** MagnaFlow
- **Type:** Direct Fit OEM Grade Catalytic Converter (2.5" ID/2.5" OD)
- **Tags:** 2009 Hummer H3, 2009 Hummer H3T, 2010 Hummer H3, 2010 Hummer H3T, 51476, Auto Parts, Automotive, Catalytic Converter, Direct Fit OEM Grade Catalytic Converter (2.5" ID/2.5" OD), Direct Replacement, Exhaust Performance, Exhaust System, MagnaFlow, Magnaflow-51476, Muffler, Performance Exhaust, Performance Parts, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 565.50 CAD | In stock |

## Images

- MagnaFlow 51476 Direct Fit OEM Grade Catalytic Converter (2.5" ID/2.5" OD)

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/magnaflow-hummer-h3-catalytic-converter-51476)
> Updated: 2026-07-16