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Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
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Magnaflow
MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter for 2011-2019 Chevrolet/GMC 2500HD/3500HD (21-252)
$1,010.00
This product will be available for sale in 2 weeks, but you can pre-order now to receive 10% discount!
Fits 2011-2019 Chevrolet Silverado 2500 HD/3500 HD, Suburban 3500 HD, and GMC Sierra 2500 HD/3500 HD.
Replace your worn-out factory converter with the MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-252. Engineered for a true bolt-on installation, this converter requires no cutting or welding and is designed to match the original equipment flow dynamics and geometry. The compact, low-mass spun body design features a single laser fusion weld to eliminate potential leak points and improve thermal efficiency, helping to keep your check engine light off and maintain factory fuel economy.
Constructed from high-strength materials for long-term durability, this unit features 16-gauge 409 stainless steel tubing and corrosion-resistant 410 stainless steel barbed hangers. The assembly is secured with 308 stainless steel MIG welds and includes Torca Accuseal exhaust clamps to ensure a uniform 360-degree seal.
- Manufacturer Part Number: 21-252
- Construction: 16-gauge mandrel-bent 409 stainless steel tubing
- Compliance: Federal/EPA compliant for OBDII vehicles
- Hardware included: Torca Accuseal clamps and essential gaskets
- Installation: Direct-fit replacement; no cutting or welding required
- Design: Spun body with single laser fusion weld for leak prevention
- Welds: Durable 308 stainless steel MIG welds
📘 Guides & Manuals
🔧 Fitment & Compatibility
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2019 | Chevrolet | Silverado 2500 HD | High Country |
| 2011-2019 | Chevrolet | Silverado 2500 HD | LT |
| 2011-2019 | Chevrolet | Silverado 2500 HD | LTZ |
| 2011-2019 | Chevrolet | Silverado 2500 HD | WT |
| 2015-2019 | Chevrolet | Silverado 3500 HD | High Country |
| 2011-2019 | Chevrolet | Silverado 3500 HD | LT |
| 2011-2019 | Chevrolet | Silverado 3500 HD | LTZ |
| 2011-2019 | Chevrolet | Silverado 3500 HD | WT |
| 2017-2019 | Chevrolet | Suburban 3500 HD | LS |
| 2017-2019 | Chevrolet | Suburban 3500 HD | LT |
| 2015-2019 | GMC | Sierra 2500 HD | Base |
| 2011-2019 | GMC | Sierra 2500 HD | Denali |
| 2011-2019 | GMC | Sierra 2500 HD | SLE |
| 2011-2019 | GMC | Sierra 2500 HD | SLT |
| 2011-2014 | GMC | Sierra 2500 HD | WT |
| 2015-2019 | GMC | Sierra 3500 HD | Base |
| 2011-2019 | GMC | Sierra 3500 HD | Denali |
| 2011-2019 | GMC | Sierra 3500 HD | SLE |
| 2011-2019 | GMC | Sierra 3500 HD | SLT |
| 2011-2014 | GMC | Sierra 3500 HD | WT |
Choose your Location
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Atlus
1340 Cobb Dr, Unit 1, Eustis, FL 32736
352-234-4458
Mon – Fri: 8:30 am – 4:30 pm
Sat: 9:00 am – 2:00 pm
Sun: Closed
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If you can find the part for a lower price from an authorized dealer/shop, we'll match the price! Reach out to Hello@AtlusAuto.com, our live chat located at the bottom right of your screen, or request an Atlas Price Guarantee, or visit our dedicated APG page to submit a request.
MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter for 2011-2019 Chevrolet/GMC 2500HD/3500HD (21-252)
$1,010.00
This product will be available soon, but you can pre-order now to get on the list before others!
US Based Support - In Florida
30 Days Satisfaction Guarantee
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Share:
$1,010.00
$1,010.00
$1,010.00
Fits 2011-2019 Chevrolet Silverado 2500 HD/3500 HD, Suburban 3500 HD, and GMC Sierra 2500 HD/3500 HD.
Replace your worn-out factory converter with the MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-252. Engineered for a true bolt-on installation, this converter requires no cutting or welding and is designed to match the original equipment flow dynamics and geometry. The compact, low-mass spun body design features a single laser fusion weld to eliminate potential leak points and improve thermal efficiency, helping to keep your check engine light off and maintain factory fuel economy.
Constructed from high-strength materials for long-term durability, this unit features 16-gauge 409 stainless steel tubing and corrosion-resistant 410 stainless steel barbed hangers. The assembly is secured with 308 stainless steel MIG welds and includes Torca Accuseal exhaust clamps to ensure a uniform 360-degree seal.
- Manufacturer Part Number: 21-252
- Construction: 16-gauge mandrel-bent 409 stainless steel tubing
- Compliance: Federal/EPA compliant for OBDII vehicles
- Hardware included: Torca Accuseal clamps and essential gaskets
- Installation: Direct-fit replacement; no cutting or welding required
- Design: Spun body with single laser fusion weld for leak prevention
- Welds: Durable 308 stainless steel MIG welds
📘 Guides & Manuals
🔧 Fitment & Compatibility
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2019 | Chevrolet | Silverado 2500 HD | High Country |
| 2011-2019 | Chevrolet | Silverado 2500 HD | LT |
| 2011-2019 | Chevrolet | Silverado 2500 HD | LTZ |
| 2011-2019 | Chevrolet | Silverado 2500 HD | WT |
| 2015-2019 | Chevrolet | Silverado 3500 HD | High Country |
| 2011-2019 | Chevrolet | Silverado 3500 HD | LT |
| 2011-2019 | Chevrolet | Silverado 3500 HD | LTZ |
| 2011-2019 | Chevrolet | Silverado 3500 HD | WT |
| 2017-2019 | Chevrolet | Suburban 3500 HD | LS |
| 2017-2019 | Chevrolet | Suburban 3500 HD | LT |
| 2015-2019 | GMC | Sierra 2500 HD | Base |
| 2011-2019 | GMC | Sierra 2500 HD | Denali |
| 2011-2019 | GMC | Sierra 2500 HD | SLE |
| 2011-2019 | GMC | Sierra 2500 HD | SLT |
| 2011-2014 | GMC | Sierra 2500 HD | WT |
| 2015-2019 | GMC | Sierra 3500 HD | Base |
| 2011-2019 | GMC | Sierra 3500 HD | Denali |
| 2011-2019 | GMC | Sierra 3500 HD | SLE |
| 2011-2019 | GMC | Sierra 3500 HD | SLT |
| 2011-2014 | GMC | Sierra 3500 HD | WT |
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