# MagnaFlow 49637 Direct Fit OEM Grade Catalytic Converter for 2001-2003 Chevrolet Avalanche 2500 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: 49637
-   Product type: Direct Fit OEM Grade Catalytic Converter
-   Designed for compatible vehicle applications listed on this page

### Vehicle Fitment

-   2002 Chevrolet Avalanche 2500, Note: Base; 8.1L
-   2003 Chevrolet Avalanche 2500, Note: Base; 8.1L
-   2001 Chevrolet Suburban 2500, Note: Base, Ls, Lt; 8.1L
-   2002 Chevrolet Suburban 2500, Note: Ls, Lt; 8.1L
-   2003 Chevrolet Suburban 2500, Note: Ls, Lt; 8.1L
-   2001 GMC Yukon Xl 2500, Note: Sle, Slt; 8.1L
-   2002 GMC Yukon Xl 2500, Note: Sle, Slt; 8.1L
-   2003 GMC Yukon Xl 2500, Note: Sle, Slt; 8.1L

### 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 49637.

**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 for Chevrolet Avalanche 2500
-   49637 fitment
-   MagnaFlow Direct Fit OEM Grade Catalytic Converter
-   2001 Chevrolet Avalanche 2500 Direct Fit OEM Grade Catalytic Converter

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2002

Chevrolet

Avalanche 2500

Base; 8.1L

2003

Chevrolet

Avalanche 2500

Base; 8.1L

2001

Chevrolet

Suburban 2500

Base, Ls, Lt; 8.1L

2002

Chevrolet

Suburban 2500

Ls, Lt; 8.1L

2003

Chevrolet

Suburban 2500

Ls, Lt; 8.1L

2001

GMC

Yukon Xl 2500

Sle, Slt; 8.1L

2002

GMC

Yukon Xl 2500

Sle, Slt; 8.1L

2003

GMC

Yukon Xl 2500

Sle, Slt; 8.1L

## Details

- **Price:** 967.75 CAD
- **Vendor:** MagnaFlow
- **Type:** Direct Fit OEM Grade Catalytic Converter
- **Tags:** 2001 Chevrolet Suburban 2500, 2001 GMC Yukon Xl 2500, 2002 Chevrolet Avalanche 2500, 2002 Chevrolet Suburban 2500, 2002 GMC Yukon Xl 2500, 2003 Chevrolet Avalanche 2500, 2003 Chevrolet Suburban 2500, 2003 GMC Yukon Xl 2500, 49637, Auto Parts, Automotive, Catalytic Converter, Direct Fit OEM Grade Catalytic Converter, Direct Replacement, Exhaust Performance, Exhaust System, MagnaFlow, Magnaflow-49637, Muffler, Performance Exhaust, Performance Parts, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 967.75 CAD | In stock |

## Images

- MagnaFlow 49637 Direct Fit OEM Grade Catalytic Converter

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> Source: [Standard Auto Part](www.standardautopart.com/products/magnaflow-chevrolet-avalanche-2500-catalytic-converter-49637)
> Updated: 2026-06-13