# MagnaFlow 51548 Direct Fit OEM Grade Catalytic Converter (2.5" ID/2.5" OD) for 2008-2019 Cadillac Cts and More

### Performance Overview

The Magnaflow OEM Grade Catalytic Converters are the perfect replacement for your stock converter. They are crafted from high-quality stainless or aluminized steel for maximum durability. They are seam-welded for unbreakable bonds with no risk of vibrations. The catalytic converters are available with a lap inserted in the point where the neck meets the catalytic converter body. The neck is carefully formed to be sure that it doesn't reach the body where it can cause trouble to the exhaust flow. As an additional safety feature, the Catalytic Converter has a heavy duty heat shield to protect it against extreme heat and give additional stability.

### Key Features

-   Brand: MagnaFlow
-   Part number: 51548
-   Product type: Direct Fit OEM Grade Catalytic Converter (2.5" ID/2.5" OD)
-   Designed for compatible vehicle applications listed on this page

### Vehicle Fitment

-   2010 Cadillac Cts, Note: Base, Luxury, Performance; 3.0L; 2.50"; 2.50"
-   2011 Cadillac Cts, Note: Base, Luxury, Performance; 3.0L; 2.50"; 2.50"
-   2012 Cadillac Cts, Note: Base, Luxury, Performance, Premium; 3.0L, 3.6L; 2.50"; 2.50"
-   2013 Cadillac Cts, Note: Base, Luxury, Performance, Premium; 3.0L, 3.6L; 2.50"; 2.50"
-   2014 Cadillac Cts, Note: Base, Luxury, Performance, Premium, Vsport, Vsport Premium; 3.0L, 3.6L; 2.50"; 2.50"
-   2015 Cadillac Cts, Note: Luxury, Performance, Premium, Vsport, Vsport Premium; 3.6L; 2.50"; 2.50"
-   2016 Cadillac Cts, Note: Luxury, Performance, Premium, Vsport, Vsport Premium; 3.6L; 2.50"; 2.50"
-   2017 Cadillac Cts, Note: Luxury, Premium Luxury, Vsport, Vsport Premium Luxury; 3.6L; 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 51548.

**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 OEM Grade Catalytic Converter (2.5" ID/2.5" OD) for Cadillac Cts
-   51548 fitment
-   MagnaFlow Direct Fit OEM Grade Catalytic Converter (2.5" ID/2.5" OD)
-   2008 Cadillac Cts Direct Fit OEM Grade Catalytic Converter (2.5" ID/2.5" OD)

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2010

Cadillac

Cts

Base, Luxury, Performance; 3.0L; 2.50"; 2.50"

2011

Cadillac

Cts

Base, Luxury, Performance; 3.0L; 2.50"; 2.50"

2012

Cadillac

Cts

Base, Luxury, Performance, Premium; 3.0L, 3.6L; 2.50"; 2.50"

2013

Cadillac

Cts

Base, Luxury, Performance, Premium; 3.0L, 3.6L; 2.50"; 2.50"

2014

Cadillac

Cts

Base, Luxury, Performance, Premium, Vsport, Vsport Premium; 3.0L, 3.6L; 2.50"; 2.50"

2015

Cadillac

Cts

Luxury, Performance, Premium, Vsport, Vsport Premium; 3.6L; 2.50"; 2.50"

2016

Cadillac

Cts

Luxury, Performance, Premium, Vsport, Vsport Premium; 3.6L; 2.50"; 2.50"

2017

Cadillac

Cts

Luxury, Premium Luxury, Vsport, Vsport Premium Luxury; 3.6L; 2.50"; 2.50"

2018

Cadillac

Cts

Luxury, Premium Luxury, Vsport, Vsport Premium Luxury; 3.6L; 2.50"; 2.50"

2019

Cadillac

Cts

Luxury, Premium Luxury, Vsport, Vsport Premium Luxury; 3.6L; 2.50"; 2.50"

2016

Chevrolet

Equinox

L, Ls, Lt, Ltz; 2.4L; 2.50"; 2.50"

2017

Chevrolet

Equinox

L, Ls, Lt, Premier; 2.4L; 2.50"; 2.50"

2016

GMC

Terrain

Denali, Sl, Sle, Slt; 2.4L; 2.50"; 2.50"

2017

GMC

Terrain

Denali, Sl, Sle, Slt; 2.4L; 2.50"; 2.50"

2010

Mazda

3

Mazdaspeed; 2.3L; 2.50"; 2.50"

2011

Mazda

3

Mazdaspeed; 2.3L; 2.50"; 2.50"

2012

Mazda

3

Mazdaspeed; 2.3L; 2.50"; 2.50"

2013

Mazda

3

Mazdaspeed; 2.3L; 2.50"; 2.50"

2008

Toyota

Highlander

Base, Limited, Sport; 3.5L; 2.50"; 2.50"

2011

Toyota

Sienna

Base, Le, Limited, Se, Xle; 3.5L; 2.50"; 2.50"; All Wheel Drive

## Details

- **Price:** 845.35 CAD
- **Vendor:** MagnaFlow
- **Type:** Direct Fit OEM Grade Catalytic Converter (2.5" ID/2.5" OD)
- **Tags:** 2008 Toyota Highlander, 2010 Cadillac Cts, 2010 Mazda 3, 2011 Cadillac Cts, 2011 Mazda 3, 2011 Toyota Sienna, 2012 Cadillac Cts, 2012 Mazda 3, 2013 Cadillac Cts, 2013 Mazda 3, 2014 Cadillac Cts, 2015 Cadillac Cts, 2016 Cadillac Cts, 2016 Chevrolet Equinox, 2016 GMC Terrain, 2017 Cadillac Cts, 2017 Chevrolet Equinox, 2017 GMC Terrain, 2018 Cadillac Cts, 2019 Cadillac Cts, 51548, Auto Parts, Automotive, Catalytic Converter, Direct Fit OEM Grade Catalytic Converter (2.5" ID/2.5" OD), Direct Replacement, Exhaust Performance, Exhaust System, MagnaFlow, Magnaflow-51548, Muffler, Performance Exhaust, Performance Parts, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 845.35 CAD | In stock |

## Images

- MagnaFlow 51548 Direct Fit OEM Grade Catalytic Converter (2.5" ID/2.5" OD)

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/magnaflow-cadillac-cts-catalytic-converter-51548)
> Updated: 2026-07-16