# MagnaFlow 21-578 OEM Grade Direct Fit Catalytic Converter for 2012-2019 Jeep Grand Cherokee

### 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: 21-578
-   Product type: OEM Grade Direct Fit Catalytic Converter
-   Designed for compatible vehicle applications listed on this page

### Vehicle Fitment

-   2012 Jeep Grand Cherokee, Note: Srt8; 6.4L
-   2013 Jeep Grand Cherokee, Note: Srt8; 6.4L
-   2014 Jeep Grand Cherokee, Note: Srt; 6.4L
-   2015 Jeep Grand Cherokee, Note: Srt; 6.4L
-   2016 Jeep Grand Cherokee, Note: Srt; 6.4L
-   2017 Jeep Grand Cherokee, Note: Srt; 6.4L
-   2018 Jeep Grand Cherokee, Note: Srt; 6.4L
-   2019 Jeep Grand Cherokee, Note: Srt; 6.4L

### 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 21-578.

**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

-   OEM Grade Direct Fit Catalytic Converter for Jeep Grand Cherokee
-   21-578 fitment
-   MagnaFlow OEM Grade Direct Fit Catalytic Converter
-   2012 Jeep Grand Cherokee OEM Grade Direct Fit Catalytic Converter

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2012

Jeep

Grand Cherokee

Srt8; 6.4L

2013

Jeep

Grand Cherokee

Srt8; 6.4L

2014

Jeep

Grand Cherokee

Srt; 6.4L

2015

Jeep

Grand Cherokee

Srt; 6.4L

2016

Jeep

Grand Cherokee

Srt; 6.4L

2017

Jeep

Grand Cherokee

Srt; 6.4L

2018

Jeep

Grand Cherokee

Srt; 6.4L

2019

Jeep

Grand Cherokee

Srt; 6.4L

## Details

- **Price:** 1392.0 CAD
- **Vendor:** MagnaFlow
- **Type:** OEM Grade Direct Fit Catalytic Converter
- **Tags:** 2012 Jeep Grand Cherokee, 2013 Jeep Grand Cherokee, 2014 Jeep Grand Cherokee, 2015 Jeep Grand Cherokee, 2016 Jeep Grand Cherokee, 2017 Jeep Grand Cherokee, 2018 Jeep Grand Cherokee, 2019 Jeep Grand Cherokee, 21-578, Auto Parts, Automotive, Catalytic Converter, Direct Replacement, Exhaust Performance, Exhaust System, MagnaFlow, Magnaflow-21-578, Muffler, OEM Grade Direct Fit Catalytic Converter, Performance Exhaust, Performance Parts, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1392.00 CAD | In stock |

## Images

- MagnaFlow 21-578 OEM Grade Direct Fit Catalytic Converter

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/magnaflow-jeep-grand-cherokee-catalytic-converter-21-578)
> Updated: 2026-07-16