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- USA
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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
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Description
K&N 20-21 Chevy / GMC 2500/3500 6.6L V8 Performance Air Intake SystemGain a guaranteed increase in horsepower and torque with K&N cold air intake system featuring madrel bent aluminum intake tube. Each system is paired with a washable, reusable High Flow Air Filter featuring oiled cotton filter media. Installation Instructions User 1 This Part Fits: Year Make Model Submodel 2020 2025 Chevrolet Silverado 2500 HD Custom 2020 2025 Chevrolet Silverado 2500 HD High Country 2020 2025 Chevrolet Silverado 2500 HD LT 2020 2025
Gain a guaranteed increase in horsepower and torque with K&N cold air intake system featuring madrel-bent aluminum intake tube. Each system is paired with a washable, reusable High-Flow Air Filter featuring oiled cotton filter media.Installation Instructions
User 1
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2025 | Chevrolet | Silverado 2500 HD | Custom |
| 2020-2025 | Chevrolet | Silverado 2500 HD | High Country |
| 2020-2025 | Chevrolet | Silverado 2500 HD | LT |
| 2020-2025 | Chevrolet | Silverado 2500 HD | LTZ |
| 2020-2025 | Chevrolet | Silverado 2500 HD | WT |
| 2024-2025 | Chevrolet | Silverado 2500 HD | ZR2 |
| 2020-2025 | Chevrolet | Silverado 3500 HD | High Country |
| 2020-2025 | Chevrolet | Silverado 3500 HD | LT |
| 2020-2025 | Chevrolet | Silverado 3500 HD | LTZ |
| 2020-2025 | Chevrolet | Silverado 3500 HD | WT |
| 2020-2025 | GMC | Sierra 2500 HD | AT4 |
| 2024-2025 | GMC | Sierra 2500 HD | AT4X |
| 2020-2021 | GMC | Sierra 2500 HD | Base |
| 2020-2025 | GMC | Sierra 2500 HD | Denali |
| 2022-2025 | GMC | Sierra 2500 HD | Pro |
| 2020-2025 | GMC | Sierra 2500 HD | SLE |
| 2020-2025 | GMC | Sierra 2500 HD | SLT |
| 2020-2025 | GMC | Sierra 3500 HD | AT4 |
| 2020-2021 | GMC | Sierra 3500 HD | Base |
| 2020-2025 | GMC | Sierra 3500 HD | Denali |
| 2022-2025 | GMC | Sierra 3500 HD | Pro |
| 2020-2025 | GMC | Sierra 3500 HD | SLE |
| 2020-2025 | GMC | Sierra 3500 HD | SLT |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 1039 reviews
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Product Reviews
★★★★★ 5
Fit is true to size
Color: Green, Size: Large
Great quality the fit was as expected soft material
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Reviewed in the United States on February 3, 2026
★★★★★ 4
Nice shirt
Color: Blue, Size: XX-Large
Size is fairly accurate. Bought it for my husband, who is difficult to fit!! The shirt is durable and soft. Nice purchase
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Reviewed in the United States on December 20, 2025
★★★★★ 5
How well does it fit.
Color: Black-grey, Size: Medium
Material is a little thin, but fits well.
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Reviewed in the United States on April 1, 2026
★★★★★ 1
waste of money. not a flannel
Color: Purple, Size: X-Large
sizing is way off. the material isn't that of even a Walmart flannel shirt. it's a stiff crappy material. I leaned down to pick something up and I tore the shoulders of the shirt. horrible stitching.
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Good quality true to size
Color: Orange, Size: Medium
Good material. My brother is 6’1 and 165 pounds and was able to fit the medium perfectly. So glad I didn’t get a large even though a large woulda been cool just a little oversized probably
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Reviewed in the United States on December 15, 2025