# MagnaFlow Conv Univ 4.00inch O/C Diesel

Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Diesel Oxidation Catalyst 60021. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow's state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with California or Federal/EPA Emission systems.

-   High Strength 16 Gauge 409 Stainless Steel Tubing For Exceptional Corrosion Resistance And Maximum Service Life
-   Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
-   Expertly Crafted To Replicate Oem-Like Flow Dynamics/Maintaining Factory Performance And Fuel Efficiency
-   Compact/Lightweight Construction Enables Installation In Confined Areas/Welding Is Required
-   Your Trusted Source For EPA-Compliant Catalytic Converters
-   Durable 308 Stainless Steel Mig Welds

This Part Fits:

Year

Make

Model

Submodel

2001-2004

Chevrolet

Silverado 2500 HD

Base

2001-2004,2006

Chevrolet

Silverado 2500 HD

LS

2001-2004,2006

Chevrolet

Silverado 2500 HD

LT

2004,2006

Chevrolet

Silverado 2500 HD

WT

2001-2004

Chevrolet

Silverado 3500

Base

2001-2004,2006

Chevrolet

Silverado 3500

LS

2001-2004,2006

Chevrolet

Silverado 3500

LT

2004,2006

Chevrolet

Silverado 3500

WT

2002-2004

GMC

Sierra 2500 HD

Base

2001-2002,2006

GMC

Sierra 2500 HD

SL

2001-2004,2006

GMC

Sierra 2500 HD

SLE

2001-2004,2006

GMC

Sierra 2500 HD

SLT

2003-2004,2006

GMC

Sierra 2500 HD

WT

2002-2004

GMC

Sierra 3500

Base

2001-2002,2006

GMC

Sierra 3500

SL

2001-2004,2006

GMC

Sierra 3500

SLE

2001-2004,2006

GMC

Sierra 3500

SLT

2004,2006

GMC

Sierra 3500

WT

## Details

- **Price:** 569.22 CAD
- **Vendor:** Magnaflow
- **Type:** Catalytic Converter Universal

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 569.22 CAD | In stock |

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/magnaflow-conv-univ-4-00inch-o-c-diesel)
> Updated: 2026-06-29