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Headers for 2005 Hummer H2

We have 12 Items In-stock.

Gibson - Performance Headers

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

Gibson Performance Headers - Silver Ceramic, Stainless Steel, 4-1, Direct Fit

$566.24 $1,030.41 You Save $464.17 (45%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: G27GP500SC
  • Series: Gibson Performance
  • Material: Stainless Steel
  • Design: 4-1
  • Color/Finish: Silver Ceramic
  • Emissions: 50-State Legal
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 1-2 Business Days
  • Bolts Studs Included: Yes
  • Collector Attachment Style: OE Style Flange
  • Collector Diameter: Stock
  • Equal Length Primary Tubes: No
  • Gaskets Included: Premium Carbon Composite Gasket
  • Head Flange Style: Stock
  • Head Flange Thickness: 3/8 in.
  • Header Style: Shorty Tuned
  • Includes: Premium gasket, installation hardware
  • Numberof Cylinders: 8
  • Port Shape: Round
  • Primary Tube Diameter: 1 5/8 in.
  • Primary Tube Thickness: 16 Gauge
  • Primary Tube Wall Thickness: 16-Gauge
  • Provision: EGR
  • Warranty: Lifetime Gibson limited warranty
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Fits the following 2005 Hummer H2 Submodels

  • 8 Cyl 6.0L | Base
See more
Customer Review: (see review/s)
  • Great way to get more performance. Great product a top quality product.

    posted by: fix it man on November 4, 2014

  • view all 2 reviews

Gibson Performance Headers - Natural, Stainless Steel, 4-1, Direct Fit

$626.90 $878.58 You Save $251.68 (29%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: G27GP500S
  • Series: Gibson Performance
  • Material: Stainless Steel
  • Design: 4-1
  • Color/Finish: Natural
  • Emissions: 50-State Legal
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 1-2 Business Days
  • Bolts Studs Included: Yes
  • Collector Attachment Style: OE Style Flange
  • Collector Diameter: Stock
  • Equal Length Primary Tubes: No
  • Gaskets Included: Premium Carbon Composite Gasket
  • Head Flange Style: Stock
  • Head Flange Thickness: 3/8 in.
  • Header Style: Shorty Tuned
  • Includes: Premium gasket, installation hardware
  • Numberof Cylinders: 8
  • Port Shape: Round
  • Primary Tube Diameter: 1 5/8 in.
  • Primary Tube Thickness: 16 Gauge
  • Primary Tube Wall Thickness: 16-Gauge
  • Warranty: Lifetime Gibson limited warranty
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Fits the following 2005 Hummer H2 Submodels

  • 8 Cyl 6.0L | Base
See more

Gibson Performance Headers - Chrome, Mild-Steel, 4-1, Direct Fit

$428.01 $747.45 You Save $319.44 (43%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: G27GP500
  • Series: Gibson Performance
  • Material: Mild-Steel
  • Design: 4-1
  • Color/Finish: Chrome
  • Emissions: 50-State Legal
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 1-2 Business Days
  • Bolts Studs Included: Yes
  • Collector Attachment Style: OE Style Flange
  • Collector Diameter: Stock
  • Equal Length Primary Tubes: No
  • Gaskets Included: Premium Carbon Composite Gasket
  • Head Flange Style: Stock
  • Head Flange Thickness: 3/8 in.
  • Header Style: Shorty Tuned
  • Includes: Premium gasket, installation hardware
  • Numberof Cylinders: 8
  • Port Shape: Round
  • Primary Tube Diameter: 1 5/8 in.
  • Primary Tube Thickness: 14 Gauge
  • Primary Tube Wall Thickness: 14-gauge
  • Provision: EGR
  • Warranty: Lifetime Gibson limited warranty
See more

Fits the following 2005 Hummer H2 Submodels

  • 8 Cyl 6.0L | Base
See more

JBA Cat4ward Shorty Headers

JBA – CAT4WARD SHORTY HEADERS

Want to find a way to unleash extra horsepower and torque from your engine and stay smog legal in all 50 states? JBA offers just what you need, a set of JBA Cat4ward Shorty Headers will help your vehicle to achieve a bump in power while keeping your vehicle 50-state smog legal. 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.

  • Perfect for towing vehicles and motor homes
  • 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
  • One of the finest 50 state smog legal aftermarket performance parts available anywhere
  • Choose from titanium ceramic, silver ceramic or stainless steel finishes
  • Both silver and titanium ceramic finishes block heat for lower temps under hood
  • Largest selection of 50-state smog legal headers available anywhere
  • Heavy gauge tubing lowers header noise and makes for a better exhaust note for most cars

NOTE: JBA Cat4ward Shorty Headers are available in two styles; competition versions for off-road and racetrack use only and 50 state smog legal versions for on-road use.

JBA Cat4ward Shorty Headers - Titanium Ceramic Coated, Stainless Steel, 4-1, Direct Fit

$521.77 $854.50 You Save $332.73 (39%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: J211850S3JT
  • Series: JBA Cat4ward Shorty
  • Material: Stainless Steel
  • Design: 4-1
  • Color/Finish: Titanium Ceramic Coated
  • Emissions: 50-State Legal
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • E O Number: D-57-29 & D-57-25
  • Anticipated Ship Out Time: 2-3 business days
  • Head Flange Thickness: 3/8 in.
  • Header Style: Shorty
  • Primary Tube Diameter: 1.625 in.
  • Warranty: 1-year JBA limited warranty
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Fits the following 2005 Hummer H2 Submodels

  • 8 Cyl 6.0L | Base
See more

JBA Cat4ward Shorty Headers - Natural, Stainless Steel, 4-1, Direct Fit

$446.26 $659.77 You Save $213.51 (32%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: J211850S3
  • Series: JBA Cat4ward Shorty
  • Material: Stainless Steel
  • Design: 4-1
  • Color/Finish: Natural
  • Emissions: 50-State Legal
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • E O Number: D-57-29 & D-57-25
  • Anticipated Ship Out Time: 2-3 business days
  • Collector Attachment Style: Stock flange
  • Equal Length Primary Tubes: No
  • Head Flange Style: 1-Piece
  • Head Flange Thickness: 3/8 in.
  • Header Style: Shorty
  • Includes: Gasket(s)
  • Primary Tube Diameter: 1.625 in.
  • Primary Tube Wall Thickness: 14-gauge
  • Warranty: 1-year JBA limited warranty
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Fits the following 2005 Hummer H2 Submodels

  • 8 Cyl 6.0L | Base
See more

JBA Cat4ward Shorty Headers - Silver Ceramic Coated, Stainless Steel, 4-1, Direct Fit

$566.13 $854.50 You Save $288.37 (34%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: J211850S3JS
  • Series: JBA Cat4ward Shorty
  • Material: Stainless Steel
  • Design: 4-1
  • Color/Finish: Silver Ceramic Coated
  • Emissions: 50-State Legal
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • E O Number: D-57-29 & D-57-25
  • Anticipated Ship Out Time: 2-3 business days
  • Head Flange Thickness: 3/8 in.
  • Header Style: Shorty
  • Primary Tube Diameter: 1.625 in.
  • Warranty: 1-year JBA limited warranty
See more

Fits the following 2005 Hummer H2 Submodels

  • 8 Cyl 6.0L | Base
See more

JBA Long Tube Headers

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.

JBA Long Tube Headers - Natural, Stainless Steel, Direct Fit

$410.32 $659.98 You Save $249.66 (38%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: J216850S
  • Series: JBA Long Tube
  • Material: Stainless Steel
  • Color/Finish: Natural
  • 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.
  • Header Style: Long Tube
  • Primary Tube Diameter: 1.75 in.
  • Warranty: 1-year JBA limited warranty
See more

Fits the following 2005 Hummer H2 Submodels

  • 8 Cyl 6.0L | Base
See more

JBA Long Tube Headers - Silver Ceramic Coated, Stainless Steel, Direct Fit

$503.22 $857.13 You Save $353.91 (41%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: J216850SJS
  • Series: JBA Long Tube
  • Material: Stainless Steel
  • Color/Finish: Silver Ceramic Coated
  • 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.
  • Header Style: Long Tube
  • Primary Tube Diameter: 1.75 in.
  • Warranty: 1-year JBA limited warranty
See more

Fits the following 2005 Hummer H2 Submodels

  • 8 Cyl 6.0L | Base
See more

JBA Long Tube Headers - Titanium Ceramic Coated, Stainless Steel, Direct Fit

$503.22 $857.13 You Save $353.91 (41%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: J216850SJT
  • Series: JBA Long Tube
  • Material: Stainless Steel
  • Color/Finish: Titanium Ceramic Coated
  • 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.
  • Header Style: Long Tube
  • Primary Tube Diameter: 1.75 in.
  • Warranty: 1-year JBA limited warranty
See more

Fits the following 2005 Hummer H2 Submodels

  • 8 Cyl 6.0L | Base
See more

Hedman Painted Hedders

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.

Hedman Painted Hedders Headers - Black, Steel, 4-1, Direct Fit

$346.40 $767.14 You Save $420.74 (55%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: H5669690
  • Series: Hedman Painted Hedders
  • Material: Steel
  • Design: 4-1
  • Color/Finish: Black
  • Emissions: 49-State Legal - no CA shipments
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 1-2 Business Days
  • Bolts Studs Included: Yes
  • Collector Attachment Style: Flange
  • Collector Diameter: Stock
  • Emissions Legality: 49-State Legal - no CA shipments
  • Gaskets Included: Yes
  • Head Flange Style: Standard
  • Head Flange Thickness: 1/4 in.
  • Header Style: Shorty
  • Includes: Premium gasket, installation hardware
  • Numberof Cylinders: 8
  • Port Shape: Round
  • Primary Tube Diameter: 1.63 in.
  • Primary Tube Thickness: 18 Gauge
  • Primary Tube Wall Thickness: 18-gauge
  • Warranty: Lifetime Hedman limited warranty
See more

Fits the following 2005 Hummer H2 Submodels

  • 8 Cyl 6.0L | Base
See more

Hedman Hi-Tech Coating (HTC) Hedders

HEDMAN – HI-TECH COATING (HTC) HEDDERS

Do you drive your vehicle in extreme high heat conditions such as when racing or towing? If you answered yes, then replace your power-robbing stock manifold with Hedman Hi-Tech Coating (HTC) Hedders to lower your operating temps and release extra horsepower and torque from your engine.

Hedman Hedders have always been made in the USA since the company was founded over 50 years ago. Back in the 1980s, Hedman pioneered the use of ceramic metallic coatings for Hedders after observing its use in the aerospace industry. 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 Hedder whether it is installed on your race car or daily driver.

  • Handles temps up to 1,400 degrees and protects from corrosion with ceramic metallic coating
  • Proudly manufactured in U.S.A.
  • Perfect for towing vehicles and motor homes
  • The ceramic metallic coating can withstand high-heat situations like racing or towing 
  • Keeps under hood temps lower
  • Will not chip, peel or turn blue like chrome

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

Hedman HTC Hedders Headers - Metallic ceramic coated, Steel, 4-1, Direct Fit

$699.13 $1,424.28 You Save $725.15 (51%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Sku#: H5669696
  • Series: Hedman HTC Hedders
  • Material: Steel
  • Design: 4-1
  • Color/Finish: Metallic ceramic coated
  • Emissions: 49-State Legal - no CA shipments
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 1-2 Business Days
  • Bolts Studs Included: Yes
  • Collector Attachment Style: Flange
  • Collector Diameter: Stock
  • Emissions Legality: 49-State Legal - no CA shipments
  • Gaskets Included: Yes
  • Head Flange Style: Standard
  • Head Flange Thickness: 1/4 in.
  • Header Style: Shorty
  • Includes: Premium gasket, installation hardware
  • Numberof Cylinders: 8
  • Port Shape: Round
  • Primary Tube Diameter: 1.63 in.
  • Primary Tube Thickness: 18 Gauge
  • Primary Tube Wall Thickness: 18-gauge
  • Warranty: Lifetime Hedman limited warranty with 5-year limited warranty on coating
See more

Fits the following 2005 Hummer H2 Submodels

  • 8 Cyl 6.0L | Base
See more

More results for 2005 Hummer H2 Headers

  • Borla Stainless Steel Headers

    BORLA – STAINLESS STEEL HEADERS

    Uncompromised quality and precision manufacturing is what you get in all Borla Stainless Steel Headers. Borla’s Stainless Steel Headers are designed to make your... (see more)

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