# MagnaFlow 5451126 California Direct Fit Catalytic Converter for 2005-2006 Buick Terraza 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: 5451126
-   Product type: California Direct Fit Catalytic Converter
-   Designed for compatible vehicle applications listed on this page

### Vehicle Fitment

-   2005 Buick Terraza, Note: Cx, Cxl; 3.5L; Front Wheel Drive
-   2006 Buick Terraza, Note: Cx, Cxl; 3.5L; Front Wheel Drive
-   2005 Chevrolet Uplander, Note: Base, Ls, Lt; 3.5L; Front Wheel Drive
-   2006 Chevrolet Uplander, Note: Base, Ls, Lt; 3.5L; Front Wheel Drive
-   2005 Pontiac Montana, Note: Sv6; 3.5L; Front Wheel Drive
-   2006 Pontiac Montana, Note: Sv6; 3.5L; Front Wheel Drive
-   2005 Saturn Relay, Note: 2, 3; 3.5L; Front Wheel Drive
-   2006 Saturn Relay, Note: 2, 3; 3.5L; Front Wheel Drive

### 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 5451126.

**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

-   California Direct Fit Catalytic Converter for Buick Terraza
-   5451126 fitment
-   MagnaFlow California Direct Fit Catalytic Converter
-   2005 Buick Terraza California Direct Fit Catalytic Converter

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2005

Buick

Terraza

Cx, Cxl; 3.5L; Front Wheel Drive

2006

Buick

Terraza

Cx, Cxl; 3.5L; Front Wheel Drive

2005

Chevrolet

Uplander

Base, Ls, Lt; 3.5L; Front Wheel Drive

2006

Chevrolet

Uplander

Base, Ls, Lt; 3.5L; Front Wheel Drive

2005

Pontiac

Montana

Sv6; 3.5L; Front Wheel Drive

2006

Pontiac

Montana

Sv6; 3.5L; Front Wheel Drive

2005

Saturn

Relay

2, 3; 3.5L; Front Wheel Drive

2006

Saturn

Relay

2, 3; 3.5L; Front Wheel Drive

## Details

- **Price:** 2673.8 CAD
- **Vendor:** MagnaFlow
- **Type:** California Direct Fit Catalytic Converter
- **Tags:** 2005 Buick Terraza, 2005 Chevrolet Uplander, 2005 Pontiac Montana, 2005 Saturn Relay, 2006 Buick Terraza, 2006 Chevrolet Uplander, 2006 Pontiac Montana, 2006 Saturn Relay, 5451126, Auto Parts, Automotive, California Direct Fit Catalytic Converter, Catalytic Converter, Direct Replacement, Exhaust Performance, Exhaust System, MagnaFlow, Magnaflow-5451126, Muffler, Performance Exhaust, Performance Parts, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2673.80 CAD | In stock |

## Images

- MagnaFlow 5451126 California Direct Fit Catalytic Converter

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/magnaflow-buick-terraza-catalytic-converter-carb-5451126)
> Updated: 2026-07-16