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20-26 Silverado/Sierra/Express 6.6L Duramax Exhaust Header

SKU: afe48-34145 UPC: 802959483374
Backordered – call for lead time

⚠ Call for Availability

Expected ship time: usually within 24–48 hours; some vendor items may take longer.

Call: (503) 235-1947 | Email Us: info@dfispdx.com

$1,099.00
-20% $1,373.75 $1,099.00

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Verified Fitment & Application Support

This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.

Got Questions? Feel free to email us or call us at (503) 235-1947

The aFe POWER Exhaust Header (part number 48-34145) is engineered as a direct-fit upgrade for the 2020-2023 2500/3500 6.6L Duramax.

1-3/4" 304 Stainless Steel Construction: This system is constructed of 1-3/4" mandrel-bent 304 stainless steel tubing for maximum strength and durability. Powerful Sound: This system produces a powerful sound unleashing all available horsepower and torque. Installation: Utilizing factory style flanges this system is a direct bolt-on system, which requires no cutting or modifications for a hassle-free installation. Heavy Duty Flanges: Factory style laser cut flanges are used used for a secure leak-free seal. Optimized Tube Lengths: Tube lengths are optimized for true pulse control technology which improves flow and performance. Retains Factory Sensors: This system has been designed to retain all your factory sensors for a hassle free installation. Computer-Aided Design: Utilizing state-of-the-art computer-aided design technology, this system is designed for custom, high tolerance factory fitment. MIG-Welded: 100% MIG-Welded for race-proven strength and durability. aFe POWER exhaust systems are engineered and manufactured in our Corona, California facility.

Vehicle Fitment

  • 2020 - 2026 Chevrolet Silverado 2500 HD 6.6L Duramax
  • 2020 - 2026 Chevrolet Silverado 3500 HD 6.6L Duramax
  • 2020 - 2026 GMC Sierra 2500 HD 6.6L Duramax
  • 2020 - 2026 GMC Sierra 3500 HD 6.6L Duramax
  • 2021 - 2026 Chevrolet Express 2500 6.6L Duramax
  • 2021 - 2026 Chevrolet Express 3500 6.6L Duramax

Features & Benefits

  • Engineered and tested by aFe POWER
  • Direct-fit replacement requiring no permanent modification

Specifications

  • Brand: aFe POWER
  • Manufacturer Part Number: 48-34145
  • SKU: afe48-34145
  • Part Type: Exhaust Header

Always verify aFe POWER part number 48-34145 against your vehicle's year, engine, and configuration before ordering.

Orders typically ship within 24–48 hours of being received, but because of vendor shipping times some orders may take longer. We ship within the United States only (48 contiguous states plus DC).

Shipping Height: 7.0

Shipping Length: 23.2

Shipping Width: 14.4
California Emissions (CARB)
Not legal for sale or use on pollution-controlled motor vehicles in California or other states that adopt California emissions standards. For off-road and competition use only.
California Proposition 65
WARNING: This product can expose you to chemicals that are known to the State of California to cause cancer and/or reproductive harm. For more information, visit www.P65Warnings.ca.gov.