Hummer Exhaust Manifold

Your vehicle's Exhaust Manifold(s) play a major role in not only the exhaust system for your car or truck, but also the safety of its occupants. The exhaust manifold is the first component of the exhaust system. A broken or damaged Exhaust Manifold will not only fail most state safety and emission inspections, it could also potentially allow harmful exhaust gasses into the passenger compartment of your vehicle. Your Exhaust Manifold takes the exhaust gasses from all of the individual combustion chambers in your engine and combines them to one outlet to flow through the rest of the exhaust system.

Common reasons for exhaust manifold failure include: improper engine tuning, over heating, age, corrosion, and general wear and tear. Therefore, the quality of the design and material is important to the reliability of the Exhaust Manifold.

Replacement exhaust manifolds from 1A Auto are of the highest quality. Our new aftermarket exhaust manifolds last on average 2-3 times longer than used OEM manifolds. Our exhaust manifolds are engineered with improvements over the original designs, fixing known faults.

1A Auto helps you get the right Exhaust Manifold for your vehicle. We provide 4 times more information on average per part than our competition. If you have any questions about the product, warranty, or compatibility please call our customer service toll free at 888-844-3393.

Frequently Asked Questions about Exhaust Manifolds:

• Will this Exhaust Manifold fit my car or truck?
• Are these NEW Exhaust Manifolds?
• What is the per item warranty on these Exhaust Manifolds?
• Does the Exhaust Manifold come with hardware & gaskets to install?
• What caused my old Exhaust Manifold to fail?
• Tips on how to replace an Exhaust Manifold.
• Other things you may find attached to your Exhaust manifold

Will this Exhaust Manifold fit my car or truck?

Yes! 1A Auto spends over 8,000 hours a year researching our parts. Each Exhaust Manifold part number is matched to ensure the Exhaust Manifolds will fit all of the specific vehicles we list them for. As long as your car or truck meets all of the specifications listed for each exhaust manifold 1A Auto guarantees fit.

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Are these new Exhaust Manifolds?

Yes! 1A Auto offers quality Brand NEW Exhaust Manifolds. We stand behind our products and services; we do not offer re-built or re-furbished manifolds to our valued customers. All exhaust manifolds are made to perform as well as if not better than the originals.

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What is the per item warranty on these Exhaust Manifolds?

The warranty type depends on the Exhaust Manifold. Most of our Exhaust Manifolds include a limited lifetime warranty, and some carry a 60 Day limited warranty. The warranty covers the price of the item. The item's specific warranty is typically displayed in the details of the item page. If you have any warranty questions please contact our customer service toll free at 888-844-3393.

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Does the Exhaust Manifold come with hardware & gaskets to install?

A few of our Exhaust Manifolds do not include any installation hardware. This information is displayed in the description. Each product description provides detailed information about the included components. We provide kits that include gaskets & some of the hardware. In most cases you can reuse the original hardware, or obtain it locally. If you have any questions about what is included with the item, please contact our customer service toll free at 888-844-3393.

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What caused my old Exhaust Manifold to fail?

• Improper engine tuning
• Warpage or cracking due to overheating the engine
• Age of the manifold
• Corrosion
• Broken or rotted flanges
• Cold climate driving

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Tips on how to replace an Exhaust Manifold:

• Obtain a copy of the dealer service manual procedure.
• Many dealer customer service or parts counters will let you copy this information if you ask nicely. Some may charge for it, but either way having the correct procedure and diagrams is invaluable.
• Understand how Exhaust manifold mounts and what it mounts to.
• Most exhaust manifolds have 2 main attachment points
• Exhaust Manifold to cylinder head (upper)
• Exhaust Manifold to Catalytic converter or intermediate pipe (lower)
• Choose an appropriate work area and have patience.
• Make sure you have a large protected space to work in.
• Don't let yourself be rushed by the weather.
• The day before, or hours before disassembly it is a good idea to spray the mounting bolts & nuts with a penetrating spray to make removal easier.
• If available take pictures of the manifold before you begin. These pictures can be a valuable resource during reassembly.
• Allow yourself plenty of time.
• An Exhaust Manifold replacement can be a day long project.
• Don't let yourself be rushed by starting at 7 pm on Sunday knowing you need the car for work at 6 am on Monday.

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Other things you may find attached to your Exhaust manifold are:

• Emissions or A.I.R. tubes going to an air pump, Catalytic converter or EGR valve
• Heat Riser Valve. On some exhaust systems you many have a heat riser valve between the bottom flange of the manifold to the intermediate pipe. You will need to reuse this valve for the emissions system.

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1A Auto carries top-quality exhaust manifolds for 30 different makes and over 100 different models. If you're looking to restore some kick to your Jeep or fuel efficiency to your Ford car or truck, Check out 1A Auto's new aftermarket exhaust manifolds. If you have any questions about a 1A Auto exhaust manifold or our auto parts in general, call 1A Auto direct at 888-844-3393.

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  The 1A Auto Team
  

For more than 50 years, the Green family has been installing and using the same high quality auto parts that you'll find on our website. We actually use the parts we sell, and we've been selling online since 1999. Our company's mission is to make your car projects go smoothly, and to become your trusted source for auto parts. To this end, we treat our customers like family.

We employ USA based, knowledgeable support technicians. They'll help you through your project. We always make sure you get the right part. And we boast the industry's most generous returns policy. You won't find a company more passionate about auto parts than 1A Auto.