{
    "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
}
2012 GMC Sierra 2500 HD
1
0
Price Match Guarantee
60-Day Returns
Lifetime Replacement
Price Match Guarantee
60-Day Returns
Lifetime Replacement
Guaranteed to Fit2012 GMC Sierra 2500 HD Change Vehicle

Gibson®
2012 GMC Sierra 2500 HD - Shorty Headers

Tap image and pinch to zoom.
$886.99
$1,008.24Save: $121.25(12%)
Manufacturer #GP129S
Guaranteed to Fit2012 GMC Sierra 2500 HD Change Vehicle
Qty:
1

Your Vehicle Fit Details

Vehicle Name
Submodel
Engine
Fitment Information
2012 GMC Sierra 2500 HD
SLT
8 Cyl 6.0L
CARB E.O. D-411-11
2012 GMC Sierra 2500 HD
Denali
8 Cyl 6.0L
CARB E.O. D-411-11
2012 GMC Sierra 2500 HD
SLE
8 Cyl 6.0L
CARB E.O. D-411-11
2012 GMC Sierra 2500 HD
WT
8 Cyl 6.0L
CARB E.O. D-411-11

Highlights

Part:
Headers
Brand:
Gibson
Emissions:
50-State Legal
Series:
Performance Series
Header Style:
Shorty
Primary Tube Diameter:
1 1/2 in. Primary Tube
Color Finish:
Natural
Collector Diameter:
Stock Collector
Quantity Sold:
Kit
Warranty:
Lifetime Gibson limited 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.

Collector Attachment Style:
OE Style Flange
Design:
4-1
EO Number:
EO Number: D-411-9; D-411-11
Head Flange Thickness:
3/8 in. Thick Head Flange
Includes:
With Premium gasket, installation hardware and Bolts/Studs
Material:
Made of Stainless Steel
Port Shape:
Round Port
Primary Tube Gauge:
16 Gauge
Fitnotes:
CARB E.O. D-411-11

Vehicle Fitment Information

Vehicle Name
Submodel
Engine
Fitment Information
2002 GMC Sierra 1500
HT
8 Cyl 4.8L
CARB E.O. D-411-11
2002 GMC Sierra 1500
HT
8 Cyl 5.3L
CARB E.O. D-411-11
2002-2003 GMC Sierra 1500
SL
8 Cyl 4.8L
CARB E.O. D-411-11
2002-2003 GMC Sierra 1500
SL
8 Cyl 5.3L
CARB E.O. D-411-11
2002-2004 Chevrolet Silverado 1500
WT
8 Cyl 4.8L
CARB E.O. D-411-11
Page 1 of 25 | Showing 1 - 5 of 122 results

Product Information

GIBSON PERFORMANCE HEADERS

Expertly crafted and tested to top-grade, OE-specific standards, Gibson Performance Headers provides high quality performance without the high level price. Its OE-standard design provides the right fit and the right solution to your vehicle needs.

  • Meticulously crafted to OE-specific standards
  • Made with top-grade materials in state-of-the-art facilities
  • Strict OE requirements in fitment and functionality ensure part is reliable in performance
  • Offers unmatched quality at an unmatched price

Gibson Performance Headers offers top-quality replacement parts for the automotive aftermarket.

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.

Customer Reviews

Shorty Headers
Awesome H2 upgrade
I got these headers with a predator stage 3 kit,,it has changed the whole tone and throttle on my H2 SUT. no doubt there's increases bottom, top, mid..the sound is really cool as well..LS growl..i recommend for sure..
Purchased on Apr 08, 2010
Shorty Headers
Great Headers
The Gibson headers are great. I put them on my 2004 Silverado 5.3L. The reduction in acceleration lag is great. I have an cold air intake, exhaust and power programmer to go along with the headers. I can feel the difference in acceleration and the low end torque. I would recommend them.
Purchased on Jan 14, 2016
Shorty Headers
headers
These were used as direct replacement for stock exhaust manifold replacement, sound is just a little deeper but nothing crazy
Purchased on Jan 19, 2015