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GMC 12686303 Exhaust Manifold Assembly

2007-2020 GMC

Customer Questions & Expert Answers (9)
GM 12686303 Exhaust Manifold Assembly
  • Part Description
    Manifold Assembly, Exh
  • Replaces
    12610962
  • Manufacturer
    General Motors
Make sure this part fits
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  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine GMC
    Manufacturer Part Number12686303
    Part DescriptionManifold Assembly, Exh
    Other NamesExhaust Manifold
    Item Dimensions6.9 x 22.2 x 11.6 inches
    Item Weight19.40 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces12610962
    ManufacturerGeneral Motors
    SKU12686303
    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
    2020, 2008-2018 GMC Savana8 Cyl 6.0L, 8 Cyl 6.0L Flex1 TON CARGO EXPRESS, 1 TON CARGO SAVANA, 1 TON COMMERCIAL/RV CUTAWAY, 1 TON PASSENGER, 3/4 TON CARGO SAVANA, 3/4 TON PASSENGER SAVANA
    2007-2019 GMC Sierra8 Cyl 6.0L, 8 Cyl 6.0L Flex1 TON CREW CAB, 2500 CREW CAB STANDARD BOX, 2500 REGULAR CAB, 2500 REGULAR CAB STANDARD BOX, 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 1 TON 119.0, CREW CAB 1 TON 137.0, 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, EXTENDED CREW CAB 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
    2011-2014, 2008-2009 GMC Yukon8 Cyl 6.0L, 8 Cyl 6.0L Flex3/4 TON, XL 3/4 TON
  • 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 12686303 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How should the mounting bolts be secured for the 2011 Chevrolet Suburban? Posted by Customer
    A:
    Starting at the fourth thread, apply a 1/4-inch wide band of medium-strength thread-locking compound to the threads of the bolts.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Exhaust Manifold
    Q:
    How should the alignment of the steering intermediate shaft be marked for the 2009 Chevrolet Silverado? Posted by Customer
    A:
    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.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Exhaust Manifold
    Q:
    What is the final step in the installation process for the 2008 Chevrolet Suburban? Posted by Customer
    A:
    The remainder of the installation is the reverse of removal.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Exhaust Manifold
    Q:
    What is the final step in the installation process for the 2009 Chevrolet Silverado? Posted by Customer
    A:
    The remainder of the installation is the reverse of removal.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Exhaust Manifold
    Q:
    How should the manifold be installed on the cylinder head for the 2013 GMC Sierra? Posted by Customer
    A:
    Place the manifold on the cylinder head and install the mounting bolts finger-tight.
    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 is the final step in the installation process for the 2007 GMC Yukon? Posted by Customer
    A:
    The remainder of the installation is the reverse of removal.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Exhaust Manifold
    Q:
    How should the manifold and cylinder head mating surfaces be prepared for the 2010 GMC Yukon? Posted by Customer
    A:
    Use a gasket scraper to remove all carbon deposits and gasket material.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Exhaust 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 12686303, the Right Choice

Your vehicle deserves only genuine OEM GM parts and accessories. To ensure reliability, purchase GM part # 12686303 Exhaust Manifold Assembly. It is sometimes referred to as GMC Exhaust Manifold. Our GM parts and accessories are expedited directly from authorized GM dealers strategically located all across the U.S. and are backed by the manufacturer's 12 month, 12,000 mile warranty. OEM GM parts are the best for restoring your vehicle to factory condition performance. This part fits specific GMC Savana, Sierra, Yukon models.

Affordable, reliable and built to last, GM part # 12686303 Exhaust Manifold Assembly stands out as the smart option. GMPartsGiant.com is your prime online source with the biggest and best selection of genuine GM parts and accessories at giant discounted prices. We have the OEM GM parts and accessories you need at the wholesale prices. GMPartsGiant.com has you covered no matter what type of GM vehicle you drive. For detailed GMC parts information, click here.

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