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GMC Sierra 2500 HD Headers

We have 6 Items In-stock. Select a year to continue.
$387.17 List Price $836.75 Save $449.58 Availability: In Stock
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GIBSON – PERFORMANCE HEADERS

Gibson’s Performance Headers are proven to increase horsepower by an impressive 20 hp and torque by as much as 30 lbs – a significant boost whether you’re on the track or the street. Gibson is known as the leading manufacturer of street-legal, high performance exhaust systems for trucks, SUVs, diesels, off-road vehicles and RVs.

  • Designed to replace factory exhaust manifold and utilize factory cross-over pipes
  • Streamlines air flow
  • Thick, 3/8” heavy-duty laser-cut flanges will not warp or leak - guaranteed
  • Choose ceramic coat, nickel-plated or stainless steel finish
  • Backed by a lifetime warranty
  • No welding required – easy to bolt-on
  • Engine lasts longer because it operates at cooler temperatures
  • Improved efficiency also directly improves gas mileage
  • Proven to improve torque by up to 30 lbs and horsepower up to 20 hp
  • Direct fit by vehicle year, make and model
  • Designed and manufactured in the USA
  • SKU#: G27GP129S
  • Brand: Gibson
  • Fit Note: 4WD, RWD
  • Color/Finish: Natural
  • Emissions: 50-State Legal
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 1-2 Business Days
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Fits the following GMC Sierra 2500 HD Years:
  • 2011-2013 | 8 Cyl 6.0L | Denali
  • 2007-2013 | 8 Cyl 6.0L | SLE, SLT, WT
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Rating: (see review/s)

"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.." posted by: Mathias on February 15, 2010

"Im pretty mechaniclly inclined and installed them in about 4 hours. looks great sound good noticed most increase in the mid to top end. But got rear-ended and went head on into a tree before i had to re-torque them...thw front end is destroyed but the headers are still good haha" posted by: chevyguy575 on February 15, 2009

$566.13 List Price $854.50 Save $288.37 Availability: In Stock
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JBA CAT4WARD SHORTY HEADERS, STAINLESS STEEL, SILVER CERAMIC, SET OF 2 -- 49-state legal; Not for sale or use in California; Cannot be shipped to California addresses; 1.625 in. tube diameter, 0.375 in. standard head flange; Shorty style; Round head port; They include mandrel-bent stainless steel primary tubes, patented JBA Firecone collector, factory style emission connections, extra thick collector domes, CNC laser-cut flange, and oversized exhaust ports; Made of tough and durable stainless steel; Constructed through race-proven technology for maximum horsepower and torque gains; They improve throttle response, resist warping, prevent leakage, increase flow, and accommodate cylinder head porting; Direct replacement for factory manifold, installation hardware kit included; For vehicles without EGR; Easy installation.
  • SKU#: J211850S3JS
  • Brand: JBA
  • Fit Note: Without EGR
  • Color/Finish: Silver ceramic coated
  • Emissions: 50-State Legal
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 2-3 business days
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Fits the following GMC Sierra 2500 HD Years:
  • 2007 | All Engines | All Submodels
$347.32 List Price $750.00 Save $402.68 Availability: In Stock
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HEDMAN – PAINTED HEADERS

Is that power-robbing stock manifold still on your vehicle? If you answered yes, then replace it with a Hedman Painted Header to lower your operating temps and release extra horsepower and torque from your engine. These headers are designed for painting, so order a can of header paint in the color that best suits your vehicle. Hedman Headers have always been made in the USA since the company was founded over 50 years ago. Bob Hedman started out making headers as a one man shop but word spread fast about the horsepower and torque that Hedman headers were producing. His headers have been in demand by top engine builders and racers since the start. Hedman’s time perfecting headers on the track and on the dyno ensures you will get optimum performance with every Hedman Header whether it is installed on your race car or daily driver.

  • Perfect for hot rod builds on a tight budget
  • Proudly manufactured in U.S.A.
  • Tubing size is 16 to 18 gauge depending on model
  • Size of flanges are 5/16 inch
  • These headers are designed to be painted, so pick up a can of header paint in a color of your choice

NOTE: Not legal for use or sale in California on vehicles that came equipped with emission controls from the factory.

  • SKU#: H5669680
  • Brand: Hedman
  • Fit Note: 4WD, RWD
  • Color/Finish: Black
  • Emissions: 49-State Legal - no CA shipments
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 2-3 business days
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Fits the following GMC Sierra 2500 HD Years:
  • 2003 | 8 Cyl 6.0L | WT
  • 2002-2003 | 8 Cyl 6.0L | Base
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$162.79 List Price $192.09 Save $29.30 Availability: In Stock
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FLOWTECH UNIVERSAL STANDARD BLOCK HUGGER HEADERS, BLACK -- 49-state legal; Not for sale or use in California; Cannot be shipped to California addresses; 1.625 in. tube size; 2.5 in. collector size; Includes gaskets and all necessary hardware; Features electrostatically applied satin black paint, computer-controlled mandrel-bent 16-gauge tubing, and precision die-cut exhaust port flanges; Engineered and tested for leak-proof seal; Universal only for custom cars, trucks and street rods using V8 265-400 displacement, Chevy small block engines.
  • SKU#: F3111000
  • Brand: Flowtech
  • Color/Finish: Black
  • Emissions: 49-State Legal - no CA shipments
  • Product Fit: Minor Modifications
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: Same day - 1 business day
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Fits the following GMC Sierra 2500 HD Years:
  • 2003-2009 | 8 Cyl 6.6L | WT
  • 2001-2009 | 8 Cyl 6.6L | SLE, SLT
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$449.99 List Price $530.99 Save $81.00 Availability: In Stock
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BBK – HEADERS

For less than $500 and an afternoon you can get a substantial increase in true horsepower – up to 23 extra to be more precise – by getting a BBK header in there to optimize your vehicle’s air flow. Aftermarket performance leader BBK specializes in throttle bodies, cold air intake systems and headers and is recognized worldwide for its adjustable clutch quadrant kits.

  • Designed to replace the factory exhaust manifold
  • Makes as much as 23 more horsepower
  • Premium fully-machined mandrel-bent tubing
  • Bolt-on style for easy installation
  • Designed and made in America
  • Streamlines air flow
  • Comes in polished chrome or flat finish
  • Laser-cut flanges are meant to prevent heat distortion
  • SKU#: B4540060
  • Brand: BBK
  • Fit Note: 4WD, 1.75 in., With Air Fitting Connectors, RWD, 1.75 in., With Air Fitting Connectors
  • Color/Finish: Silver Ceramic
  • Emissions: 49-State Legal - no CA shipments
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 4-5 business days
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Fits the following GMC Sierra 2500 HD Years:
  • 2003-2009 | 8 Cyl 6.0L | WT
  • 2001-2009 | 8 Cyl 6.0L | SLE, SLT
(see more)
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$941.99 List Price $1,111.55 Save $169.56 Availability: In Stock
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BORLA HEADERS, STAINLESS STEEL, NATURAL FINISH, SET OF 2 -- 49-state legal; Not for sale or use in California; Cannot be shipped to California addresses; Includes gaskets, bolt kit, bolts, washers, nuts, and block off plates; Shorty style; Round head port; Made of high-grade aerospace-quality T-304 stainless steel; Every Borla header employs ultra smooth mandrel-bent tubing, all-welded construction, warp-free flanges, and special race-bred and patented technology, providing the ultimate in power and endurance; Increases flow and power; Accurate fit and easy bolt-on installation ensured and tested through the latest in engineering technology.
  • SKU#: B2517110
  • Brand: Borla
  • Fit Note: 4WD, RWD
  • Emissions: 49-State Legal - no CA shipments
  • Product Fit: Direct Fit
  • Quantity Sold: Set of 2
  • Anticipated Ship Out Time: 2-3 business days
  • Bolts/ Studs Included: Yes
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Fits the following GMC Sierra 2500 HD Years:
  • 2003-2006 | 8 Cyl 6.0L | WT
  • 2001-2006 | 8 Cyl 6.0L | SL, SLE, SLT
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Select more GMC Sierra 2500 HD parts under Headers, Manifolds & Components from list below.