2020-2025
2015-2019
2007-2014
Installation Time
(approx) 2 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
FREE 1 to 3-Day Delivery on Orders $119+ Details
Talk to a Sierra 3500 Sales Tech
1-888-706-1096
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Get $80 Off!
Redeem Now >
Find Headers for your Sierra 3500
Stainless Works 2-Inch Catted Long Tube Headers; Performance Connect (20-25 6.6L Gas Sierra 3500 HD)Find parts that fit my vehicle
Item SHG6873
Sierra 3500 Sales Techs:
Connect Now
M-F 8:30A-11P, Sat-Sun 8:30A-9P
$0.00
1 Reviews
Our Price
$2,409.20 kit
Will this fit your Vehicle?
Saved - View your saved items
We're sorry. We couldn't save this product at this time.
Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- Helps Increase Horsepower and Torque
- Generates a Deep Exhaust Note
- Long Tube Headers
- Comes with High-Flow Cats
- Comes with a Mid-Pipe Crossover
- Has 2-Inch Primary Tubes
- With 3-Inch Diameter Collectors
- Built Using 304 Stainless Steel
- Performance Connect
- Designed for Street Use
- Does Not Have a CARB EO Number
- No Tuning Is Required
- Made to Fit 2020-2025 6.6L Gas GMC Sierra 3500 HD Models
| Brand | Stainless Works |
| Headers Type | Long Tube Headers |
| Header Primary Size | 1.76-2.00 Inch |
| Header Collector Size | Stock Replacement |
| Header Finish | Polished |
Description
More Horsepower and Torque. Upgrade your truck’s street-driving capabilities by installing these Stainless Works 2-Inch Catted Long Tube Headers with Performance Connect. By adding these catted long tube headers, your truck will be able to receive more horsepower and torque. These components also come with a mid-pipe crossover, as well as 3-inch diameter collectors, which all contribute to giving your truck a more powerful driving performance.
Deep Exhaust Sound. Make everyone’s head turn your way by adding these long tube headers. These components let your truck generate a deeper roar that perfectly matches your vehicle’s high-performance drives.
Includes High-Flow Cats. The high-flow cats of these long tube headers help optimize your vehicle’s street-driving performance. With these catalytic converters, your truck’s exhaust gases can flow freely and at much a higher rate, resulting in fewer restrictions and incredible power gains.
Stainless Steel Construction. For superior strength and corrosion resistance, these long tube headers are constructed using 304 stainless steel. Even if your new headers are exposed to varying weather conditions, extreme heat, oil, chemicals, and other corrosive elements, these headers won’t easily get damaged or deteriorate.
No Tuning Is Required. Setting up these long tube headers is much simpler than those in the market because they don’t require any tuning. Once they’re mounted to your vehicle, they’re ready for use.
Application. These Stainless Works 2-Inch Catted Long Tube Headers with Performance Connect are made to fit 2020-2025 6.6L Gas GMC Sierra 3500 HD models.
Fitment:
- 2020 GMC Sierra 3500
- 2021 GMC Sierra 3500
- 2022 GMC Sierra 3500
- 2023 GMC Sierra 3500
- 2024 GMC Sierra 3500
- 2025 GMC Sierra 3500
Stainless Works CT220HCAT
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (2) Catted Long Tube Header Assemblies
- Installation Hardware
5.0
Customer Reviews (1)
Reviews of Stainless Works Exhaust products have an average rating of 5.0 out of 5
Questions & Answers
No questions about this product yet.
Ask the First Question
Will It Fit My Sierra 3500
- 6.6L V8 - 20, 21, 22, 23, 24, 25
