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Hummer 12580420 Manifold, Intake

2008 Hummer H3

Customer Questions & Expert Answers (11)
GM 12580420 Manifold, Intake
GM 12580420 Manifold, Intake
GM 12580420 Manifold, Intake
GM 12580420 Manifold, Intake
GM 12580420 Manifold, Intake
  • Part Description
    MANIFOLD, Engine Fuel Intake Manifold
  • Manufacturer
    General Motors
Make sure this part fits
$187.06 MSRP: $295.65
You Save: $108.59 (37%)
Currently Unavailable

Due to manufacturer supply shortage, this item isn't currently available for ordering.

  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers

  • Related Parts

    Shop for related parts for your vehicle

  • Product Specifications

    BrandGenuine Hummer
    Manufacturer Part Number12580420
    Part DescriptionMANIFOLD, Engine Fuel Intake Manifold
    Other NamesIntake Manifold, Manifold
    Item Dimensions28.5 x 19.2 x 12.5 inches
    Item Weight16.30 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12580420
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65

  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    2008 Hummer H38 Cyl 5.3LSUV

  • Customer Questions & Expert Answers

    Q:
    I am wonder if this is complete and correct part for my vehicle. Posted by GMPartsGiant Specialist
    A:
    You can Select Your Vehicle to check if 12580420 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How to remove the intake manifold on 4.3L V6 engine on Chevrolet Avalanche? Posted by Customer
    A:
    To start with, disconnect the cable from the battery's negative terminal prior to eliminating the intake manifold. Also, drain coolant and remove ignition coil as well as EVAP canister tube. In addition, sever heater hoses; throttle body wiring, and numerous electrical connectors. Moreover, get rid of PCV valve hose; power brake booster hose, and radiator hose. Furthermore, drop water pump intake hose together with drivebelt. And then, release power steering pump bracket nut and bolts. Finally, shift power steering pump bracket forward in order to reach the bolt at front of intake manifold. Therefore, remove intake lower manifold mounting bolts and pry up manifold to break gasket seal. Eventually loosen all connections attaching the intake manifold while ensuring nothing is still attached. For installation purposes: clean mating surfaces and tap thread in bolt holes; apply RTV sealant on front and rear manifolds' mating surfaces plus a thin ring around new intake manifold gaskets' cylinder head side coolant passage holes; place gaskets accordingly while sealant is still wet then set the manifold in position; install bolts eventually following recommended sequence; finally perform remaining tasks in reversed manner fill cooling system again and check for leaks at joints between intake manifolds.
    Posted by GMPartsGiant Specialist
    Q:
    How to remove the intake manifold on 4.3L V6 engine on GMC Yukon? Posted by Customer
    A:
    To start with, disconnect the cable from the battery's negative terminal prior to eliminating the intake manifold. Also, drain coolant and remove ignition coil as well as EVAP canister tube. In addition, sever heater hoses; throttle body wiring, and numerous electrical connectors. Moreover, get rid of PCV valve hose; power brake booster hose, and radiator hose. Furthermore, drop water pump intake hose together with drivebelt. And then, release power steering pump bracket nut and bolts. Finally, shift power steering pump bracket forward in order to reach the bolt at front of intake manifold. Therefore, remove intake lower manifold mounting bolts and pry up manifold to break gasket seal. Eventually loosen all connections attaching the intake manifold while ensuring nothing is still attached. For installation purposes: clean mating surfaces and tap thread in bolt holes; apply RTV sealant on front and rear manifolds' mating surfaces plus a thin ring around new intake manifold gaskets' cylinder head side coolant passage holes; place gaskets accordingly while sealant is still wet then set the manifold in position; install bolts eventually following recommended sequence; finally perform remaining tasks in reversed manner fill cooling system again and check for leaks at joints between intake manifolds.
    Posted by GMPartsGiant Specialist
    Q:
    How to remove the intake manifold on 4.3L V6 engine on Chevrolet Suburban? Posted by Customer
    A:
    To start with, disconnect the cable from the battery's negative terminal prior to eliminating the intake manifold. Also, drain coolant and remove ignition coil as well as EVAP canister tube. In addition, sever heater hoses; throttle body wiring, and numerous electrical connectors. Moreover, get rid of PCV valve hose; power brake booster hose, and radiator hose. Furthermore, drop water pump intake hose together with drivebelt. And then, release power steering pump bracket nut and bolts. Finally, shift power steering pump bracket forward in order to reach the bolt at front of intake manifold. Therefore, remove intake lower manifold mounting bolts and pry up manifold to break gasket seal. Eventually loosen all connections attaching the intake manifold while ensuring nothing is still attached. For installation purposes: clean mating surfaces and tap thread in bolt holes; apply RTV sealant on front and rear manifolds' mating surfaces plus a thin ring around new intake manifold gaskets' cylinder head side coolant passage holes; place gaskets accordingly while sealant is still wet then set the manifold in position; install bolts eventually following recommended sequence; finally perform remaining tasks in reversed manner fill cooling system again and check for leaks at joints between intake manifolds.
    Posted by GMPartsGiant Specialist
    Q:
    How should the fuel rails and injectors be removed for the 2008 Chevrolet Express? Posted by Customer
    A:
    Remove the fuel rails and injectors as an assembly to help prevent damage to the injectors.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Intake Manifold
    Q:
    What additional step may be necessary for the lower intake manifold on the 2008 Chevrolet Express? Posted by Customer
    A:
    It may be necessary to remove a valve cover on some models.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Intake Manifold
    Q:
    What is the first step in the removal process for the 2007 Chevrolet Trailblazer? Posted by Customer
    A:
    The first step is to disconnect the cable from the negative terminal of the battery.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Intake Manifold
    Q:
    What is the first step to remove the intake manifold for the 2008 Chevrolet Silverado? Posted by Customer
    A:
    The first step is to disconnect the cable from the negative terminal of the battery.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Intake Manifold
    Q:
    What is the first step to remove the intake manifold for the 2007 GMC Sierra? Posted by Customer
    A:
    The first step is to disconnect the cable from the negative terminal of the battery.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Intake Manifold
    Q:
    What are the initial steps to remove and install an intake manifold for the 2008 GMC Yukon? Posted by Customer
    A:
    The initial steps are to disconnect the negative battery cable and relieve fuel system pressure.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Intake Manifold
    Q:
    What is the first step to remove the intake manifold for the 2008 Chevrolet Tahoe? Posted by Customer
    A:
    The first step is to disconnect the cable from the negative terminal of the battery.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Intake Manifold
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

Genuine GM Part 12580420, the Right Choice

To ensure reliability, purchase GM part # 12580420 Manifold, Intake. It is sometimes referred to as Hummer Intake Manifold. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Hummer H3 models.

GMPartsGiant.com is a leading supplier of genuine GM parts and accessories such as GM 12580420 Manifold, Intake. You're certainly in the right place if you're searching for the great cost-effective OEM GM parts. Look no further than our vast inventory of genuine GM parts offered at unbeatable online prices, all of which are backed by the manufacturer's warranty. Not to forget, our hassle-free return policy and quick delivery service ensure a smooth shopping experience for you. For detailed Hummer parts information, click here.

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