# MagnaFlow 451256 Universal Fit California Catalytic Converter (2.5" ID/2.5" OD) for 2001-2006 Ford Mustang 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: 451256
-   Product type: Universal Fit California Catalytic Converter (2.5" ID/2.5" OD)
-   Designed for compatible vehicle applications listed on this page

### Vehicle Fitment

-   2001 Ford Mustang, Note: Base; 3.8L; 2.50"; 2.50"
-   2002 Ford Mustang, Note: Base; 3.8L; 2.50"; 2.50"
-   2003 Ford Mustang, Note: Base; 3.8L; 2.50"; 2.50"
-   2004 Ford Mustang, Note: Base, Gt, Mach 1, Svt Cobra; 3.9L, 4.6L; 2.50"; 2.50"
-   2004 Ford Ranger, Note: Xl, Xlt; 2.3L; 2.50"; 2.50"
-   2005 Ford Ranger, Note: Xl, Xlt; 2.3L; 2.50"; 2.50"
-   2006 Ford Ranger, Note: Xl, Xlt; 2.3L; 2.50"; 2.50"
-   2004 Mazda B2300, Note: Base, Se; 2.3L; 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 451256.

**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

-   Universal Fit California Catalytic Converter (2.5" ID/2.5" OD) for Ford Mustang
-   451256 fitment
-   MagnaFlow Universal Fit California Catalytic Converter (2.5" ID/2.5" OD)
-   2001 Ford Mustang Universal Fit California Catalytic Converter (2.5" ID/2.5" OD)

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2001

Ford

Mustang

Base; 3.8L; 2.50"; 2.50"

2002

Ford

Mustang

Base; 3.8L; 2.50"; 2.50"

2003

Ford

Mustang

Base; 3.8L; 2.50"; 2.50"

2004

Ford

Mustang

Base, Gt, Mach 1, Svt Cobra; 3.9L, 4.6L; 2.50"; 2.50"

2004

Ford

Ranger

Xl, Xlt; 2.3L; 2.50"; 2.50"

2005

Ford

Ranger

Xl, Xlt; 2.3L; 2.50"; 2.50"

2006

Ford

Ranger

Xl, Xlt; 2.3L; 2.50"; 2.50"

2004

Mazda

B2300

Base, Se; 2.3L; 2.50"; 2.50"

2005

Mazda

B2300

Base; 2.3L; 2.50"; 2.50"

2006

Mazda

B2300

Base; 2.3L; 2.50"; 2.50"

2001

Mercedes-Benz

E320

4Matic, Base; 3.2L; 2.50"; 2.50"

2002

Mercedes-Benz

E320

4Matic, Base; 3.2L; 2.50"; 2.50"

2003

Mercedes-Benz

E320

4Matic, Base; 3.2L; 2.50"; 2.50"

2004

Mercedes-Benz

E320

4Matic, Base; 3.2L; 2.50"; 2.50"

## Details

- **Price:** 588.7 CAD
- **Vendor:** MagnaFlow
- **Type:** Universal Fit California Catalytic Converter (2.5" ID/2.5" OD)
- **Tags:** 2001 Ford Mustang, 2001 Mercedes-Benz E320, 2002 Ford Mustang, 2002 Mercedes-Benz E320, 2003 Ford Mustang, 2003 Mercedes-Benz E320, 2004 Ford Mustang, 2004 Ford Ranger, 2004 Mazda B2300, 2004 Mercedes-Benz E320, 2005 Ford Ranger, 2005 Mazda B2300, 2006 Ford Ranger, 2006 Mazda B2300, 451256, Auto Parts, Automotive, Catalytic Converter, Direct Replacement, Exhaust Performance, Exhaust System, MagnaFlow, Magnaflow-451256, Muffler, Performance Exhaust, Performance Parts, Universal Fit California Catalytic Converter (2.5" ID/2.5" OD), Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 588.70 CAD | In stock |

## Images

- MagnaFlow 451256 Universal Fit California Catalytic Converter (2.5" ID/2.5" OD)

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/magnaflow-ford-mustang-catalytic-converter-carb-451256)
> Updated: 2026-07-16