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Chevrolet 12686303 Exhaust Manifold Assembly

2007-2020 Chevrolet

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 Chevrolet
    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
    2008-2020 Chevrolet Express8 Cyl 6.0L, 8 Cyl 6.0L Flex1 TON CARGO EXPRESS, 1 TON COMMERCIAL/RV CUTAWAY, 1 TON PASSENGER, 3/4 TON CARGO EXPRESS, 3/4 TON PASSENGER EXPRESS
    2007-2019 Chevrolet Silverado8 Cyl 6.0L, 8 Cyl 6.0L Flex2500 CREW CAB STANDARD BOX, 2500 REG (CAB ONLY), 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 ONLY), 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
    2016-2019, 2011-2014, 2008-2009 Chevrolet Suburban8 Cyl 6.0L, 8 Cyl 6.0L Flex3/4 TON, 3500 4 DOOR UTILITY
  • 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

To ensure reliability, purchase GM part # 12686303 Exhaust Manifold Assembly. It is sometimes referred to as Chevrolet Exhaust 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 Chevrolet Express, Silverado, Suburban models.

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