# MagnaFlow 455009 Universal Fit California Catalytic Converter (3" ID/3" OD) for 2003 Chevrolet Silverado 1500

### 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: 455009
-   Product type: Universal Fit California Catalytic Converter (3" ID/3" OD)
-   Designed for compatible vehicle applications listed on this page

### Vehicle Fitment

-   2003 Chevrolet Silverado 1500, Note: Base, Ls, Lt, Wt; 5.3L; 3.00"; 3.00"

### 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 455009.

**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 (3" ID/3" OD) for Chevrolet Silverado 1500
-   455009 fitment
-   MagnaFlow Universal Fit California Catalytic Converter (3" ID/3" OD)
-   2003 Chevrolet Silverado 1500 Universal Fit California Catalytic Converter (3" ID/3" OD)

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2003

Chevrolet

Silverado 1500

Base, Ls, Lt, Wt; 5.3L; 3.00"; 3.00"

## Details

- **Price:** 919.3 CAD
- **Vendor:** MagnaFlow
- **Type:** Universal Fit California Catalytic Converter (3" ID/3" OD)
- **Tags:** 2003 Chevrolet Silverado 1500, 455009, Auto Parts, Automotive, Catalytic Converter, Direct Replacement, Exhaust Performance, Exhaust System, MagnaFlow, Magnaflow-455009, Muffler, Performance Exhaust, Performance Parts, Universal Fit California Catalytic Converter (3" ID/3" OD), Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 919.30 CAD | In stock |

## Images

- MagnaFlow 455009 Universal Fit California Catalytic Converter (3" ID/3" OD)

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/magnaflow-chevrolet-silverado-1500-catalytic-converter-carb-455009)
> Updated: 2026-07-16