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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, Without Air Injection, Without EGR, RWD, Without Air Injection, Without EGR
  • 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

$503.22 List Price $857.13 Save $353.91 Availability: In Stock
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JBA – LONG TUBE HEADERS

Want to find a way to unleash extra horsepower and torque from your engine? JBA offers just what you need, a set of JBA Long Tube Headers will help your vehicle to achieve a massive bump in power and much improved throttle response. JBA rose to fame back in 1987 by focusing on creating headers with massive horsepower and torque gains while remaining completely smog legal in all 50 states. In order to achieve this, JBA did not compromise on fit, durability and quality. You can rest assured that JBA put in the extra effort required to give your vehicle a noticeable jump in horsepower and torque while keeping it street legal. Besides offering the widest selection anywhere of 50 state smog legal headers, JBA also makes a full lineup of exhausts, mid-pipes and even headers for use in motorsports.

  • Prevents warping with heavy 3/8 inch laser cut head flanges
  • Exhaust port design is oversized
  • Compatible with ported heads
  • Race-proven design
  • Smooth exhaust flow from mandrel bent tubes
  • Choose from premium mirror polished 304 series stainless steel or 409 series stainless steel
  • Heavy gauge tubing lowers header noise and makes for a better exhaust note for most cars
  • Even at high RPM’s, this design produces maximum exhaust flow
  • Better exhaust scavenging
  • Available for a wide variety of pickups, SUVs, jeeps and cars
  • For the best protection against corrosion, the 304 series headers have 304 series stainless steel flanges

NOTE: For off-road or competition use only, if your vehicle came with a catalytic converter when new. If you need a 50-state smog legal header, please enter JBA Cat4ward Shorty Headers in the search area above.

  • SKU#: J216851SJT
  • Brand: JBA
  • Fit Note: 4WD, RWD
  • Emissions: Not Street Legal in CA or Any State Adopting CA Emissions - Intended For Closed Circuit Competition Use Only
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 2-3 business days
  • Head Flange Thickness: 3/8 in.
(see more)
Fits the following GMC Sierra 2500 HD Years:
  • 2011-2013 | 8 Cyl 6.0L | Denali
  • 2007-2013 | 8 Cyl 6.0L | SLE, SLT, WT
(see more)
$347.32 List Price $750.00 Save $402.68 Availability: In Stock
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HEDMAN – PAINTED HEDDERS

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 hedders are designed for painting, so order a can of header paint in the color that best suits your vehicle. Hedman Hedders have always been made in the USA since the company was founded over 50 years ago. Bob Hedman started out making hedders as a one man shop but word spread fast about the horsepower and torque that Hedman hedders were producing. His hedders have been in demand by top engine builders and racers since the start. Hedman’s time perfecting hedders 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 hedders 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: Same day - 1 business day
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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: 1-2 Business Days
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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, RWD
  • Color/Finish: Silver Ceramic
  • Emissions: 49-State Legal - no CA shipments
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 3-4 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
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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: Not Street Legal in CA or Any State Adopting CA Emissions - Intended For Closed Circuit Competition Use Only
  • Product Fit: Direct Fit
  • Quantity Sold: Set of 2
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 3-4 business days
(see more)
Fits the following GMC Sierra 2500 HD Years:
  • 2003-2006 | 8 Cyl 6.0L | WT
  • 2001-2006 | 8 Cyl 6.0L | SL, SLE, SLT
(see more)
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Select more GMC Sierra 2500 HD parts under Headers, Manifolds & Components from list below.