# MagnaFlow 4451219 Direct Fit California Catalytic Converter for 2003 Hummer H2

### 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: 4451219
-   Product type: Direct Fit California Catalytic Converter
-   Designed for compatible vehicle applications listed on this page

### Vehicle Fitment

-   2003 Hummer H2, Note: Base; 6.0L

### 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 4451219.

**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 California Catalytic Converter for Hummer H2
-   4451219 fitment
-   MagnaFlow Direct Fit California Catalytic Converter
-   2003 Hummer H2 Direct Fit California Catalytic Converter

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2003

Hummer

H2

Base; 6.0L

## Details

- **Price:** 1275.26 CAD
- **Vendor:** MagnaFlow
- **Type:** Direct Fit California Catalytic Converter
- **Tags:** 2003 Hummer H2, 4451219, Auto Parts, Automotive, Catalytic Converter, Direct Fit California Catalytic Converter, Direct Replacement, Exhaust Performance, Exhaust System, MagnaFlow, Magnaflow-4451219, Muffler, Performance Exhaust, Performance Parts, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1275.26 CAD | In stock |

## Images

- MagnaFlow 4451219 Direct Fit California Catalytic Converter

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> Source: [Standard Auto Part](www.standardautopart.com/products/magnaflow-hummer-h2-catalytic-converter-carb-4451219)
> Updated: 2026-06-13