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Chevrolet 12637647 Engine Exhaust Manifold

2010-2016 Chevrolet

Customer Questions & Expert Answers (6)
GM 12637647 Engine Exhaust Manifold
  • Part Description
    Manifold, Exhaust ; Manifold, Engine Exhaust Manifold
  • Manufacturer
    General Motors
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  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine Chevrolet
    Manufacturer Part Number12637647
    Part DescriptionManifold, Exhaust ; Manifold, Engine Exhaust Manifold
    Other NamesExhaust Manifold
    Item Dimensions19.7 x 5.3 x 5.1 inches
    Item Weight10.10 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12637647
    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
    2010-2016 Chevrolet Express8 Cyl 6.6L Diesel1 TON CARGO EXPRESS, 1 TON CARGO SAVANA, 1 TON COMMERCIAL/RV CUTAWAY, 1 TON PASSENGER, 3/4 TON CARGO EXPRESS, 3/4 TON CARGO SAVANA, 3/4 TON PASSENGER EXPRESS, 3/4 TON PASSENGER SAVANA
    2011-2016 Chevrolet Silverado8 Cyl 6.6L Diesel2500 CREW CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CREW CAB LONG BOX, 3500 CREW CAB ONLY, 3500 CREW CAB STANDARD BOX, 3500 DOUBLE CAB LONG BOX, 3500 REGULAR CAB, CREW CAB 1 TON, CREW CAB 2500 LONG BOX, CREW CAB 6'6" BOX 3/4 TON, CREW CAB 8' BOX 3/4 TON, DOUBLE CAB 2500 LONG BOX, DOUBLE CAB 2500 STANDARD BOX, EXTENDED CAB 1 TON, EXTENDED CAB 6'6" BOX 3/4 TON, EXTENDED CAB 8' BOX 3/4 TON, EXTENDED CAB CHASSIS 1 TON 161.5, REGULAR CAB 1 TON, REGULAR CAB 3/4 TON, REGULAR CAB CHASSIS 1 TON 137.0, REGULAR CAB CHASSIS 1 TON 161.5
  • 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 12637647 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How to remove and reinstall an exhaust manifold on V8 engine for Chevrolet Avalanche,Silverado,Suburban,Tahoe,GMC Sierra,Yukon,Yukon Denali and Yukon XL? Posted by Customer
    A:
    Disconnect the cable from the negative terminal of the battery. Raise the vehicle and support it securely on jackstands. Working under the vehicle, apply penetrating oil to the exhaust pipe-to-manifold studs and nuts (they're usually rusty). Remove the inner fender splash shield. Disconnect the exhaust pipe/catalytic converter pipe from the exhaust manifold. Remove the spark plug wires. Use a dab of paint to mark the alignment of the upper section of the steering intermediate shaft to the lower part of the steering column. Remove the fasteners, then separate the shafts so they can be moved aside. Remove the oil dipstick tube. If a new manifold is to be installed, remove the heat shield. Remove the manifold mounting bolts, then lift off the exhaust manifold and its gasket. Check the manifold for cracks and make sure the bolt threads are clean and undamaged. The manifold and cylinder head mating surfaces must be clean before the manifolds are reinstalled-use a gasket scraper to remove all carbon deposits and gasket material. Install the heat shields, then install the bolts and gaskets onto the manifold. Retaining tabs surrounding the gasket bolt holes should hold the assembly together as the manifold is installed. Starting at the fourth thread, apply a 1/4-inch wide band of medium-strength thread-locking compound to the threads of the bolts. Place the manifold on the cylinder head and install the mounting bolts finger-tight. When tightening the mounting bolts, work from the center to the ends. Tighten the bolts in two steps to the proper torque specifications. If required, bend the exposed end of the exhaust manifold gasket back against the cylinder head. The remainder of installation is the reverse of removal. Start the engine and check for exhaust leaks.
    Posted by GMPartsGiant Specialist
    Q:
    How to remove and reinstall exhaust manifolds on 4.3L V6 engine for Chevrolet Avalanche,Silverado,Suburban,Tahoe and GMC Sierra,Yukon,Yukon Denali,Yukon XL? Posted by Customer
    A:
    Disconnect the cable from the negative terminal of the battery. Raise the vehicle and support it securely on jackstands. Working under the vehicle, apply penetrating oil to the exhaust pipe-to-manifold studs and nuts, which are usually rusty. Remove the nuts retaining the exhaust pipe(s) to the manifold(s). Disconnect the spark plug wires, remove them from their retainers and lay them out of the way. Remove the exhaust manifold fasteners. Remove the manifolds along with the heat shields and discard the gaskets. The heat shields can be removed at this time. Check the manifold for cracks and ensure the bolt threads are clean and undamaged. The manifold and cylinder head mating surfaces must be clean before the manifolds are reinstalled-use a gasket scraper to remove all carbon deposits. Position the manifold on a bench and install the heat shields, bolts, and gaskets onto the manifold. Retaining tabs surrounding the gasket bolt holes will hold the assembly together as the manifold is installed. Place the manifold on the cylinder head and install the mounting bolts finger-tight. When tightening the mounting bolts, work from the center to the ends, and use a torque wrench. Tighten the bolts in two steps to the torque specifications. If equipped, bend the locking tabs back against the bolt heads. The remainder of installation is the reverse of removal. Start the engine and check for exhaust leaks.
    Posted by GMPartsGiant Specialist
    Q:
    What should be done with the spark plug wires for the 2010 GMC Sierra? Posted by Customer
    A:
    Remove the spark plug wires.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Exhaust Manifold
    Q:
    What should be done with the heat shields and gaskets for the 2012 GMC Sierra? Posted by Customer
    A:
    Remove them along with the manifolds and discard the gaskets.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Exhaust Manifold
    Q:
    What side is this exhaust manifold for? Posted by Customer
    A:
    This exhaust manifold is for the drivers side
    Posted by GMPartsGiant Specialist 17/2/2021
    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 12637647, the Right Choice

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