2019-2025
2014-2018
2007-2013
1999-2006
Installation Time
(approx) 2 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
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Flowtech 1-5/8-Inch Shorty Headers; Ceramic (02-13 4.8L, 5.3L Sierra 1500)Find parts that fit my vehicle
Item S525018
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$547.16
10 Reviews
On Sale
-10% $547.16 kit Was $607.95
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- Remarkable Horsepower and Torque Gains
- For That Distinctively Powerful Exhaust Sound
- Shorty Headers
- Uses Stock Cats
- Boast a High-Quality, Durable 1-5/8-Inch Construction
- Heavy-Duty 16-Gauge Mild Steel Headers
- Boasts a Resilient Ceramic Coating
- Certified with CARB EO# D-115-20
- No Tuning Required
- Fits All 2002-2013 4.8L and 5.3L GMC Sierra 1500 Models
| Brand | Flowtech |
| Headers Type | Shorty Headers |
| Header Primary Size | 1.50-1.75 Inch |
| Header Collector Size | 2.50 Inch |
| Header Finish | Ceramic Coated |
Description
Get Impeccable Power. With these Flowtech 1-5/8-Inch Shorty Headers with Ceramic Coating, your GMC Sierra 1500 can power through any obstacle it encounters. Unlike your stock headers, these upgrades come with a less restrictive design. As a result, they can push out exhaust gasses at a higher and faster rate, giving you increased gains in the horsepower and torque departments.
Get a Better Exhaust Sound. Your truck’s OE headers pale in comparison when it comes to these shorty headers’ exhaust sound. Due to their high-quality construction and design, they can generate a bolder sound that instantly captures people’s attention.
Complements Existing Cats. These headers are made to fit your truck’s existing cats. This means that installing them is easier compared to other headers.
Made to Endure Stressful Drives. Even when you push your Sierra 1500 to its limits often, these headers won’t fail you so easily. Their 16-gauge mild steel construction gives them remarkable durability while their ceramic coating protects them from high engine heat. Thanks to this, you’ll get the power you need to conquer the toughest obstacles you may encounter on the streets and trails.
No Tuning Needed. These shorty headers are designed to complement your truck’s setup, so you don’t need to tune your vehicle after installation. Nevertheless, it’s recommended to test drive your vehicle afterward to allow you to spot any problems with the headers. It’s also in your best interest to re-tighten the bolts after driving with them for several days.
CARB-Compliant Upgrades. These headers are legal for sale and use in states that adopt the CARB emission standards. Its CARB EO number is D-115-20.
Application. These Flowtech 1-5/8-Inch Shorty Headers with Ceramic coating fit all 2002-2013 4.8L and 5.3L GMC Sierra 1500 models.
Fitment:
- 2002 GMC Sierra 1500
- 2003 GMC Sierra 1500
- 2004 GMC Sierra 1500
- 2005 GMC Sierra 1500
- 2006 GMC Sierra 1500
- 2007 GMC Sierra 1500
- 2008 GMC Sierra 1500
- 2009 GMC Sierra 1500
- 2010 GMC Sierra 1500
- 2011 GMC Sierra 1500
- 2012 GMC Sierra 1500
- 2013 GMC Sierra 1500
Flowtech 91843-1FLT
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) Headers
- (2) Gaskets
- Installation Hardware
4.5
Customer Reviews (10)
Reviews of Flowtech Exhaust products have an average rating of 4.4 out of 5
Questions & Answers
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Will It Fit My Sierra 1500
- 4.8L V8 - 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13
- 5.3L V8 - 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13
