SKU:AFE49-44126-B
aFe
aFe Large Bore-HD DPF-Back Exhaust System - 4 in 409SS w/ Black Tip | 2020-2026 GMC Sierra 3500HD
aFe Large Bore-HD DPF-Back Exhaust System - 4 in 409SS w/ Black Tip | 2020-2026 GMC Sierra 3500HD
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The aFe Large Bore-HD 4in DPF-Back Exhaust fits the 2020-2026 GMC Sierra 3500HD 6.6L L5P Duramax and replaces the restrictive factory system with mandrel-bent 409 stainless tubing for stronger flow and a deeper diesel tone.
Product Overview
This DPF-back system uses 4in mandrel-bent 409 stainless steel tubing with a mitered merge collector to reduce turbulence and boost exhaust velocity. The result is gains in horsepower, torque, and throttle response on the L5P Duramax.
It bolts to factory hangers and mounting locations for a direct-fit install. Finished with dual 5in black 304 stainless intercooled clamp-on tips with a riveted aFe POWER logo plate.
Features & Specifications
- Fits: 2020-2026 GMC Sierra 3500HD 6.6L L5P Duramax
- 4in mandrel-bent 409 stainless steel tubing
- Dual 5in black 304 stainless clamp-on tips
- Mitered merge collector for higher exhaust velocity
- 100% MIG-welded construction
- Bolts to factory hangers and mounting locations
- Riveted aFe POWER logo plate on tips
- Some cutting may be required, see instructions
Fitment
This part fits the following vehicles:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2026 | GMC | Sierra 3500 HD | AT4 |
| 2020-2021 | GMC | Sierra 3500 HD | Base |
| 2020-2026 | GMC | Sierra 3500 HD | Denali |
| 2024-2026 | GMC | Sierra 3500 HD | Denali Ultimate |
| 2022-2026 | GMC | Sierra 3500 HD | Pro |
| 2020-2026 | GMC | Sierra 3500 HD | SLE |
| 2020-2026 | GMC | Sierra 3500 HD | SLT |
Shipping & Returns
Shipping & Returns
Products that are in stock ship within 1-3 business days of being ordered. Please note some items are made to order, or could be out of stock. If you have any questions regarding stock please contact us through the live chat or email and we would be happy to help
Warranty Info
Warranty Info
All warranties are through the manufacturer, they will be facilitated by State Side Performance (some manufacturers require the end user contact the manufacturer directly to facilitate the warranty, in that case we will recommend you contact the manufacturer. Please contact us by Email if you have any questions or concerns regarding a warranty claim.
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Free Shipping for Non Oversize Items of $250
More info on shipping policyFree shipping applies to items that are shipped via ground through UPS or FedEx and are over $250 going to the continental 48 states. This does not apply to Alaska or Hawaii, and does not apply to any item(s) that are shipped via freight or with any other option other than ground shipping.
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Return Policy
More info on refund and return policyReturns must be UNOPENED, UNUSED, HAVE ALL ORIGINAL PACKAGING, BE IN NEW CONDITION, HAVE A VALID RMA, BE WITHIN A 30 DAY RETURN WINDOW FROM THE DATE OF PURCHASE.