aFe Twisted 1-3/4in 304SS Shorty Header 20-23 GM 2500/3500HD 6.6L V8

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. Emissions Disclaimer: This product is not currently CARB exempt and is not available for purchase in California or for use on any vehicle registered with the California Department of Motor Vehicles. aFe POWER exhaust systems are engineered and manufactured in our Corona, California facility.

This Part Fits:

Year	Make	Model	Submodel
2021-2023	Chevrolet	Express 2500	Base
2021-2023	Chevrolet	Express 2500	LS
2021-2023	Chevrolet	Express 2500	LT
2021-2023	Chevrolet	Express 3500	Base
2021-2023	Chevrolet	Express 3500	LS
2021-2023	Chevrolet	Express 3500	LT
2020-2023	Chevrolet	Silverado 2500 HD	Custom
2020-2023	Chevrolet	Silverado 2500 HD	High Country
2020-2023	Chevrolet	Silverado 2500 HD	LT
2020-2023	Chevrolet	Silverado 2500 HD	LTZ
2020-2023	Chevrolet	Silverado 2500 HD	WT
2020-2023	Chevrolet	Silverado 3500 HD	High Country
2020-2023	Chevrolet	Silverado 3500 HD	LT
2020-2023	Chevrolet	Silverado 3500 HD	LTZ
2020-2023	Chevrolet	Silverado 3500 HD	WT
2020-2023	GMC	Sierra 2500 HD	AT4
2020-2021	GMC	Sierra 2500 HD	Base
2020-2023	GMC	Sierra 2500 HD	Denali
2022-2023	GMC	Sierra 2500 HD	Pro
2020-2023	GMC	Sierra 2500 HD	SLE
2020-2023	GMC	Sierra 2500 HD	SLT
2020-2023	GMC	Sierra 3500 HD	AT4
2020-2021	GMC	Sierra 3500 HD	Base
2020-2023	GMC	Sierra 3500 HD	Denali
2022-2023	GMC	Sierra 3500 HD	Pro
2020-2023	GMC	Sierra 3500 HD	SLE
2020-2023	GMC	Sierra 3500 HD	SLT