{
    "lazyNodes": false,
    "abFitnotesFlag": false,
    "abCrawlReviews": false,
    "productOptionsCookie": false,
    "orderDelayFlag": false,
    "skipSessionCookie": false,
    "covidMessage": false,
    "fullTitleCookie": false,
    "nrLoggerCookie": false,
    "checkoutReviewCookie": false,
    "productOptionSeqCookie": false,
    "maintenanceFlag": false,
    "bufferETACookie": false,
    "multiShippingDiscountFlag": false,
    "newFitmentFlag": false,
    "surveyOptInFlag": false,
    "crossSellFlag": false,
    "skuMappingFlag": false,
    "paySplitCookie": false,
    "callDisableFlag": false,
    "zipPaymentFlag": "u",
    "hassleFreeReturn": false,
    "lifetimeReplacement": false,
    "cpn_off": false
}
Guaranteed to Fit2003 GMC Sierra 2500 HD Change Vehicle

Flowtech®
2003 GMC Sierra 2500 HD - Shorty Headers

Tap image and pinch to zoom.
$449.95
$562.95Save: $113.00(20%)
Manufacturer #11143FLT
Guaranteed to Fit2003 GMC Sierra 2500 HD Change Vehicle
Qty:
1

Your Vehicle Fit Details

Vehicle Name
Submodel
Engine
Fitment Information
2003 GMC Sierra 2500 HD
Base
8 Cyl 6.0L
4WD, Painted Not Legal For Sale Or Use In California, Not For Sale In California
2003 GMC Sierra 2500 HD
SLE
8 Cyl 6.0L
RWD, Painted Not Legal For Sale Or Use In California, Not For Sale In California
2003 GMC Sierra 2500 HD
SLT
8 Cyl 6.0L
RWD, Painted Not Legal For Sale Or Use In California, Not For Sale In California
2003 GMC Sierra 2500 HD
WT
8 Cyl 6.0L
RWD, Painted Not Legal For Sale Or Use In California, Not For Sale In California

Highlights

Part:
Brand:
Emissions:
46-State Legal (Cannot ship to CA, CO, NY or ME)
Series:
Shorty Series
Header Style:
Shorty
Primary Tube Diameter:
1 7/8 in. Primary Tube
Color Finish:
Black
Collector Diameter:
2.5 in. Collector
Quantity Sold:
Kit
Warranty:
90-day Flowtech warranty
Prop 65 Warning:

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Design:
4-1
Head Flange Thickness:
3/8 in. Thick Head Flange
Includes:
With Gaskets and Bolts/Studs
Material:
Made of Stainless Steel
Port Shape:
Round Port
Primary Tube Gauge:
16 Gauge
Fitnotes:
4WD, Painted Not Legal For Sale Or Use In California, Not For Sale In California,RWD, Painted Not Legal For Sale Or Use In California, Not For Sale In California

Vehicle Fitment Information

Vehicle Name
Submodel
Engine
Fitment Information
2002 GMC Sierra 2500
SL
8 Cyl 6.0L
4WD, Painted Not Legal For Sale Or Use In California, Not For Sale In California
2002 GMC Sierra 2500 HD
SL
8 Cyl 6.0L
RWD, Painted Not Legal For Sale Or Use In California, Not For Sale In California
2002 GMC Sierra 3500
SL
8 Cyl 6.0L
4WD, Painted Not Legal For Sale Or Use In California, Not For Sale In California
2002-2003 Chevrolet Silverado 1500 HD
LS
8 Cyl 6.0L
4WD, Painted Not Legal For Sale Or Use In California, Not For Sale In California
2002-2003 Chevrolet Silverado 1500 HD
LT
8 Cyl 6.0L
RWD, Painted Not Legal For Sale Or Use In California, Not For Sale In California
Page 1 of 17 | Showing 1 - 5 of 84 results

Product Information

FLOWTECH – SHORTY HEADERS

Get maximum ground clearance along with Flowtech performance with these cold-rolled steel Shorty headers. They feature port seals that are O-ringed to prevent leaks and are designed to fit without hassles for performance that will last for miles. You can improve the power and sound on your street machine with Flowtech’s wide range of performance exhaust products.

  • Short tubes for maximum clearance
  • Made from cold-rolled steel tubing
  • Includes mounting hardware
  • Port seals are O-ringed to prevent leaking
  • Features free-flowing Power Plenum collectors
  • Tested for leaks
Need help?Call our product expert1-866-529-0412
Chat with us
Mondays - Sundays7am - 11pm ET | 4am - 8pm PT
Warranty Policy
Right parts, guaranteed. If you find any defects, let us know within 60 days and we’ll take care of it. Check out our Warranty Policy for more details.
Shipping Policy
We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.
Easy Return Policy
We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund. Check out our Return Policy for more details.

Product Q&A

Customer Reviews