# MagnaFlow 444506 Universal Fit California Catalytic Converter (2.5" ID/2.5" OD) for 2003-2005 Audi Allroad Quattro 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: 444506
-   Product type: Universal Fit California Catalytic Converter (2.5" ID/2.5" OD)
-   Designed for compatible vehicle applications listed on this page

### Vehicle Fitment

-   2003 Audi Allroad Quattro, Note: Base; 2.7L; 2.50"; 2.50"; Manual Trans
-   2005 Audi Allroad Quattro, Note: Base; 2.7L; 2.50"; 2.50"; Manual Trans
-   2005 Audi S4, Note: Avant, Base, Cabriolet; 4.2L; 2.50"; 2.50"
-   2005 Volkswagen Phaeton, Note: V8; 4.2L; 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 444506.

**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 Audi Allroad Quattro
-   444506 fitment
-   MagnaFlow Universal Fit California Catalytic Converter (2.5" ID/2.5" OD)
-   2003 Audi Allroad Quattro Universal Fit California Catalytic Converter (2.5" ID/2.5" OD)

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2003

Audi

Allroad Quattro

Base; 2.7L; 2.50"; 2.50"; Manual Trans

2005

Audi

Allroad Quattro

Base; 2.7L; 2.50"; 2.50"; Manual Trans

2005

Audi

S4

Avant, Base, Cabriolet; 4.2L; 2.50"; 2.50"

2005

Volkswagen

Phaeton

V8; 4.2L; 2.50"; 2.50"

## Details

- **Price:** 665.55 CAD
- **Vendor:** MagnaFlow
- **Type:** Universal Fit California Catalytic Converter (2.5" ID/2.5" OD)
- **Tags:** 2003 Audi Allroad Quattro, 2005 Audi Allroad Quattro, 2005 Audi S4, 2005 Volkswagen Phaeton, 444506, Auto Parts, Automotive, Catalytic Converter, Direct Replacement, Exhaust Performance, Exhaust System, MagnaFlow, Magnaflow-444506, Muffler, Performance Exhaust, Performance Parts, Universal Fit California Catalytic Converter (2.5" ID/2.5" OD), Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 665.55 CAD | In stock |

## Images

- MagnaFlow 444506 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-audi-allroad-quattro-catalytic-converter-carb-444506)
> Updated: 2026-07-16