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This aFe exhaust component is the 20-21 GM Trucks (V8-6.2L) 409 Stainless Steel Muffler Delete Pipe for 2020-2021 Chevrolet Silverado 1500. Verify body style, engine, drivetrain, wheelbase or cab-and-bed configuration, pipe diameter, connection point, tip finish, emissions status, and required hardware.
Key Features
- Mandrel-routed exhaust configuration for the listed connection points
- Pipe size, material, tip, sound level, emissions use, and vehicle dimensions are model specific
- Connects at the catalytic converter outlet and runs to the rear of the vehicle.
- The 49C44137NM is fully mandrel-bent for consistent interior diameter throughout every curve, preserving exhaust gas velocity from the collector to the tailpipe.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2020-2021 | Chevrolet | Silverado 1500 | Custom Trail Boss |
| 2023 | Chevrolet | Silverado 1500 | Custom Trail Boss |
| 2020-2023 | Chevrolet | Silverado 1500 | High Country |
| 2020-2023 | Chevrolet | Silverado 1500 | LT Trail Boss |
| 2020-2023 | Chevrolet | Silverado 1500 | LTZ |
| 2022-2023 | Chevrolet | Silverado 1500 | ZR2 |
| 2020-2023 | GMC | Sierra 1500 | AT4 |
| 2022-2023 | GMC | Sierra 1500 | AT4X |
| 2020-2023 | GMC | Sierra 1500 | Denali |
| 2022-2023 | GMC | Sierra 1500 | Denali Ultimate |
| 2020-2023 | GMC | Sierra 1500 | SLT |
Specifications
| Brand | aFe Power |
|---|---|
| Manufacturer Part Number | 49C44137NM |
| Product Type | Catback |
| Condition | New |
| Configuration | 20-21 GM Trucks (V8-6.2L) 409 Stainless Steel Muffler Delete Pipe |
| Material | 409 stainless steel, TIG-welded joints |
| Tip finish | polished stainless |
| Detail | Value |
| Product Line | aFe Performance Exhaust |
| Mounting | Factory hangers and OEM bolt positions |
| UPC | 802959604038 |
| Key Features Material | 409 stainless steel, TIG-welded joints Mandrel-bent tubing for consistent interior diameter |
| WARNING | This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov. |
What's Included
One new aFe catback in the exact configuration and quantity identified by this listing. Hardware, clamps, couplers, gaskets, sensors, wiring, fluids, calibration, and accessories are included only when expressly stated.
About aFe Power
aFe Power develops application-specific intake, filtration, exhaust, cooling, tuning, suspension, drivetrain, and truck-performance components supported by product testing and documented installation requirements.
Important Disclosures
- California Proposition 65 warning: this product can expose you to chemicals known to the State of California to cause cancer and reproductive harm.
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- Shop the complete aFe Power collection
Frequently Asked Questions
Will the 20-21 GM Trucks (V8-6.2L) 409 Stainless Steel Muffler Delete Pipe fit my 2020-2021 Chevrolet Silverado 1500 (aFe 49C44137NM)?
Match the complete vehicle, engine, drivetrain, cab and bed or wheelbase, body style, factory connection point, and any listed exclusions.
Does installation require cutting or welding?
Requirements depend on the exact system and vehicle. Review aFe's current instructions before disassembly; some configurations are bolt-on while others require trimming or professional fabrication.
Will this exhaust change sound level?
Sound depends on system type, pipe diameter, resonators, mufflers, engine, and other modifications. Confirm the exact configuration and local sound requirements.
Does this exhaust retain required emissions equipment?
Only when the exact product is designed around the original catalysts, DPF, or other equipment. Confirm current emissions classification before installation.
Installation Instructions
- Confirm aFe part number 49C44137NM, the complete vehicle or specification-based application, and all required supporting components.
- Allow the exhaust to cool, support the vehicle safely, and compare every pipe, hanger, flange, sensor, and included clamp before removing factory parts.
- Assemble the system loosely from the fixed connection points, align tips and clearances, then tighten hardware in the manufacturer's sequence.
- Check for leaks, contact, sensor faults, and loose hardware after the first complete heat cycle.
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