Installation Time
(approx) 2 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
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Flowtech 1-5/8-Inch Shorty Headers; Black Painted (99-02 4.8L, 5.3L Sierra 1500)
Item S525075
Sierra 1500 Sales Techs:
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M-F 8:30A-11P, Sat-Sun 8:30A-9P
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Our Price
$495.95 (pair)
FREE Shipping Market Price $570.99 You Save 13% ($75.04) Up to 10% off for Military & First Responders! See DetailsWill this fit your Vehicle?
Ship to: Columbus - 43215
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- For Increased Torque and Horsepower
- Deep Exhaust Tone
- Shorty Headers
- With 1-5/8-Inch Piping
- Comes with Black Paint
- For Street Use
- 50-State Legal with CARB EO No. D-115-16
- Calibration Not Needed
- Comes with a 90-Day Warranty
- Sold as a Pair
- Designed for All 1999-2002 GMC Sierra 1500 5.3L and 4.8L Models
| Brand | Flowtech |
| Headers Type | Shorty Headers |
| Header Primary Size | 1.50-1.75 Inch |
| Header Collector Size | Stock Replacement |
| Header Finish | Painted |
Description
Generate More Horsepower and Torque. These Black Painted Flowtech 1-5/8-Inch Shorty Headers will give your Sierra additional torque and horsepower, letting you rip through the streets or the trails. With the engine breathing easier, get added performance gains for your truck.
Intimidating Exhaust Tone. Get a deep exhaust tone for your truck with these headers. With better exhaust flow, your truck will gain an intimidating exhaust tone that's sure to catch everyone's attention.
Reuses Stock Catalytic Converters. These headers are designed to work with the factory catalytic converters. You don't have to worry about violating emissions regulations since these readily work with the factory components.
Premium Build Quality. These headers use heavy-duty 16 gauge steel tubing for their construction, with 3/8-inch flanges for a perfect seal. These come painted in black.
No Retune Needed. With these headers, a retune is not required upon installation. A custom tuning is still advised to maximize performance from this product.
Legal in 50 States. These headers are street-legal in 50 states under CARB EO No. D-115-17.
Application. These Black Painted Flowtech 1-5/8-Inch Shorty Headers will fit all models of the 1999-2002 GMC Sierra 1500 5.3L and 4.8L.
Fitment:
DetailsFlowtech 91834FLT
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) Shorty Headers
- (2) Sets of Premium Gaskets
- Mounting Hardware
4.8
Customer Reviews (8)
Questions & Answers
10 More Questions
Will It Fit My Sierra 1500
- 4.8L V8 - 99, 00, 01, 02
- 5.3L V8 - 99, 00, 01, 02
