2006 Hummer H3 Exhaust Manifold and Headers

Keep Your 2006 Hummer H3 in Top Shape with a Quality Exhaust Manifold and Header

When it comes to maintaining or upgrading your 2006 Hummer H3, choosing high-quality parts is crucial for ensuring your vehicle stays in top shape, whether you’re tackling a repair or enhancing performance. At Advance Auto Parts, we know how important it is to find the right Exhaust Manifold and Header for your H3. We currently carry a top Exhaust Manifold and Header in stock that is built to last. Whether you’re replacing a damaged Exhaust Manifold and Header or looking to upgrade, our selection for the 2006 Hummer H3 ensures you’ll find exactly what you need to keep your vehicle looking and performing its best.

Explore Related Parts

And while you’re here, don’t forget to check out related part categories like Catalytic Converters and Exhaust Pipes to complete your upgrade or repair project. At Advance Auto Parts, we’re proud to offer the parts and expertise to keep your 2006 Hummer H3 running smoothly and looking great.

Essential 2006 Hummer H3 Exhaust Manifold and Headers

Walker – Ultra EPA Direct-Fit Catalytic Converter with Integrated Exhaust Manifold (Part No.16578)

Ultra EPA Direct-Fit Catalytic Converter with Integrated Exhaust Manifold

from

$999.99
Product Features:
  • EPA COMPLIANT – For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO & NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
  • DIRECT-FIT DESIGN – Bolt-off, bolt-on OE-style converter with integrated manifold assemblies that attach directly to engine cylinder head and match all downstream connections
  • KEEPS CHECK ENGINE LIGHT OFF FOR EMISSIONS CODES – OE-style high-technology wash coat and optimal precious metal load delivers required reduction in tailpipe emissions to match vehicle application
  • STRONG AND DURABLE – Features thick OE-style flanges and manifolds for strength and durability
  • OE-STYLE DESIGN – Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE – Backed by Walker’s 25,000-mile/40,000-kilometer emissions and 50,000-mile/80,000-kilometer structural integrity limited warranty. Visit Walkerexhaust.com for details.
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Walker – Ultra EPA Direct-Fit Catalytic Converter with Integrated Exhaust Manifold (Part No.16481)

Ultra EPA Direct-Fit Catalytic Converter with Integrated Exhaust Manifold

from

$1053.99
Product Features:
  • EPA COMPLIANT – For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO & NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
  • DIRECT-FIT DESIGN – Bolt-off, bolt-on OE-style converter with integrated manifold assemblies that attach directly to engine cylinder head and match all downstream connections
  • KEEPS CHECK ENGINE LIGHT OFF FOR EMISSIONS CODES – OE-style high-technology wash coat and optimal precious metal load delivers required reduction in tailpipe emissions to match vehicle application
  • STRONG AND DURABLE – Features thick OE-style flanges and manifolds for strength and durability
  • OE-STYLE DESIGN – Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE – Backed by Walker’s 25,000-mile/40,000-kilometer emissions and 50,000-mile/80,000-kilometer structural integrity limited warranty. Visit Walkerexhaust.com for details.
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MagnaFlow – Direct-Fit OEM Grade Catalytic Converter with Integrated Exhaust Manifold (Part No.51085)

Direct-Fit OEM Grade Catalytic Converter with Integrated Exhaust Manifold

from

$860.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51085. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun” Body converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE spun” Body design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This direct-fit catalytic converter is designed to fit the 2009-2010 Hummer H3 and 2009-2010 Hummer H3T. The included gaskets and hardware reduce the possibility of a leaking seal while avoiding the need to reuse corroded factory parts for installation. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with California or Federal/EPA Emission systems.

Product Features:
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
  • Simplifies installation with essential gaskets and hardware being included in the box
  • Durable 308 stainless steel MIG welds
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Dorman – Direct Fit Exhaust Manifold: with Heat Shield (Part No.674-785)

Direct Fit Exhaust Manifold: with Heat Shield

from

$233.99
This exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the original manifold on specified vehicles. It includes all necessary gaskets and downpipe hardware for a complete repair.

Product Features:
  • Ideal replacement – this exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the stock manifold on specified vehicles
  • Reliable construction – durable materials resist warping, cracking and leaking for long-lasting performance
  • Complete repair – includes all necessary gaskets and downpipe hardware
  • Trustworthy design – built by industry leader in aftermarket manifolds
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Most Popular Exhaust Manifold and Header for 2006 Hummer H3s

Enhance your 2006 Hummer H3 with this popular Exhaust Manifold and Header we have in stock, for $1,053.99.

Walker – Ultra EPA Direct-Fit Catalytic Converter with Integrated Exhaust Manifold (Part No.16481)

Ultra EPA Direct-Fit Catalytic Converter with Integrated Exhaust Manifold

from

$1053.99
Product Features:
  • EPA COMPLIANT – For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO & NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
  • DIRECT-FIT DESIGN – Bolt-off, bolt-on OE-style converter with integrated manifold assemblies that attach directly to engine cylinder head and match all downstream connections
  • KEEPS CHECK ENGINE LIGHT OFF FOR EMISSIONS CODES – OE-style high-technology wash coat and optimal precious metal load delivers required reduction in tailpipe emissions to match vehicle application
  • STRONG AND DURABLE – Features thick OE-style flanges and manifolds for strength and durability
  • OE-STYLE DESIGN – Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE – Backed by Walker’s 25,000-mile/40,000-kilometer emissions and 50,000-mile/80,000-kilometer structural integrity limited warranty. Visit Walkerexhaust.com for details.
See More

FAQs for 2006 Hummer H3 Exhaust Manifold and Headers

What’s the price range for 2006 Hummer H3 Exhaust Manifold and Headers?

We currently have just one Exhaust Manifold and Headers for the 2006 Hummer H3 in stock: Ultra EPA Direct-Fit Catalytic Converter with Integrated Exhaust Manifold and it costs $1,053.99.

Does Advance Auto Parts sell Exhaust Manifold and Headers for other Hummer H3 model years?

Yes, we carry Exhaust Manifold and Headers for 3 model years of Hummer H3s between 2007 and 2010. The following model years are the most popular for Exhaust Manifold and Header purchases: 2010, 2009, 2008, and 2007.

What types of Exhaust Manifold and Headers do you sell for my 2006 Hummer H3?

We currently have just 1 Exhaust Manifold and Header in stock for a 2006 Hummer H3, and as of 11/2/25, it is an Exhaust Manifold and Header.

Can I get help with 2006 Hummer H3 Exhaust Manifold and Header orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Hummer Exhaust Manifold and Headers and more.

What is your return policy for Hummer H3 Exhaust Manifold and Headers?

Advance Auto Parts keeps returns simple. For new Hummer H3 Exhaust Manifold and Headers and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.