# MagnaFlow 452790 Direct Fit California Catalytic Converter (2" ID/2" OD) for 2004-2005 Bmw 545I 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: 452790
-   Product type: Direct Fit California Catalytic Converter (2" ID/2" OD)
-   Designed for compatible vehicle applications listed on this page

### Vehicle Fitment

-   2004 Bmw 545I, Note: Base; 4.4L; 2.00"; 2.00"
-   2005 Bmw 545I, Note: Base; 4.4L; 2.00"; 2.00"
-   2004 Bmw 645Ci, Note: Base; 4.4L; 2.00"; 2.00"
-   2005 Bmw 645Ci, Note: Base; 4.4L; 2.00"; 2.00"
-   2004 Bmw 745I, Note: Base; 4.4L; 2.00"; 2.00"
-   2005 Bmw 745I, Note: Base; 4.4L; 2.00"; 2.00"
-   2004 Bmw 745Li, Note: Base; 4.4L; 2.00"; 2.00"
-   2005 Bmw 745Li, Note: Base; 4.4L; 2.00"; 2.00"

### 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 452790.

**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 (2" ID/2" OD) for Bmw 545I
-   452790 fitment
-   MagnaFlow Direct Fit California Catalytic Converter (2" ID/2" OD)
-   2004 Bmw 545I Direct Fit California Catalytic Converter (2" ID/2" OD)

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2004

Bmw

545I

Base; 4.4L; 2.00"; 2.00"

2005

Bmw

545I

Base; 4.4L; 2.00"; 2.00"

2004

Bmw

645Ci

Base; 4.4L; 2.00"; 2.00"

2005

Bmw

645Ci

Base; 4.4L; 2.00"; 2.00"

2004

Bmw

745I

Base; 4.4L; 2.00"; 2.00"

2005

Bmw

745I

Base; 4.4L; 2.00"; 2.00"

2004

Bmw

745Li

Base; 4.4L; 2.00"; 2.00"

2005

Bmw

745Li

Base; 4.4L; 2.00"; 2.00"

## Details

- **Price:** 1593.72 CAD
- **Vendor:** MagnaFlow
- **Type:** Direct Fit California Catalytic Converter (2" ID/2" OD)
- **Tags:** 2004 Bmw 545I, 2004 Bmw 645Ci, 2004 Bmw 745I, 2004 Bmw 745Li, 2005 Bmw 545I, 2005 Bmw 645Ci, 2005 Bmw 745I, 2005 Bmw 745Li, 452790, Auto Parts, Automotive, Catalytic Converter, Direct Fit California Catalytic Converter (2" ID/2" OD), Direct Replacement, Exhaust Performance, Exhaust System, MagnaFlow, Magnaflow-452790, Muffler, Performance Exhaust, Performance Parts, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1593.72 CAD | In stock |

## Images

- MagnaFlow 452790 Direct Fit California Catalytic Converter (2" ID/2" OD)

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> Source: [Standard Auto Part](www.standardautopart.com/products/magnaflow-bmw-545i-catalytic-converter-carb-452790)
> Updated: 2026-06-13