2019-2025
2014-2018
2007-2013
1999-2006
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 1500 Sales Tech
1-888-706-1096
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Get $80 Off
Redeem Now >
Find Header & Mid-Pipe Kits for your Sierra 1500
Flowtech 1-5/8-Inch Shorty Headers; Black Painted (02-13 4.8L, 5.3L Sierra 1500)Find parts that fit my vehicle
Item S525017
Sierra 1500 Sales Techs:
Connect Now
M-F 8:30A-11P, Sat-Sun 8:30A-9P
$413.96
10 Reviews
On Sale
-10% $413.96 kit Was $459.95
Will this fit your Vehicle?
Saved - View your saved items
We're sorry. We couldn't save this product at this time.
or use
Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- Get Increased Torque and Horsepower with Ease
- A More Noticeably Powerful Exhaust Sound
- Shorty Headers
- Uses Stock Cats
- Brawny 1-5/8-Inch Build
- Built Out of 16-Guage Mild Steel
- Painted in a Heat Resistant Black Paint
- 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 | Painted |
Description
Unleashes the Truck’s Powerful Personality. Hit the streets and trails with a more powerful GMC Sierra 1500 with the help of these Flowtech 1-5/8-Inch Shorty Headers, Black Painted. Their free-flowing, less-restrictive design enables your vehicle to expel exhaust gasses at an enhanced rate. This way, you won’t have any problems reaching higher horsepower and torque numbers.
Attention-Grabbing Exhaust Sound. No matter where your drives take you, you can bet that people will stop and look at your vehicle in complete awe. Flowtech made sure that the headers generate a distinctively powerful exhaust sound to complement your truck’s high-performance appeal.
Designed to Fit Existing Cats. You won’t have to modify or buy new catalytic converters to enjoy the gains these shorty headers provide. They’re made to work in conjunction with your vehicle’s current setup, making them convenient upgrades.
High-Quality Headers. You can rest assured that these shorty headers can handle the abuse of your high-performance drives. This is because they’re constructed from 16-gauge mild steel and come covered with heat-resistant black paint. This way, they won’t break, warp, or decrease in performance even when you’re out hitting the toughest off-road trails.
No Tuning Needed. Tuning isn’t required after installing this upgrade. However, Flowtech recommends test driving your truck to check for any new noises. You also need to re-tighten the bolts after you’ve driven with the new headers 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, Black Painted, 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 91843FLT
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
No questions about this product yet.
Ask the First Question
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
