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GM 12677665
Exhaust Manifold

2000-2017 GM

Customer Questions & Expert Answers (26)
GM 12677665 Exhaust Manifold
  • Part Description
    Manifold, Engine Exhaust Manifold
  • Replaces
    12648339
  • Manufacturer
    General Motors
Make sure this part fits
$230.69 MSRP: $362.98
You Save: $132.29 (37%)
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  • 2007 GMC Savana 3500 Exhaust Manifold Diagram for 12677665
    The diagram listed above is for your reference. View diagram for your vehicle

    Related Parts for 12677665

  • Vehicle Fitment

    Year Make Model Trim Engine
    2004-2014, 2002 Cadillac EscaladeBase, Hybrid, Hybrid Platinum, Luxury, Platinum, Premium8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV), 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
    2004-2014 Cadillac Escalade ESVBase, Luxury, Platinum, Premium8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
    2004-2013 Cadillac Escalade EXTBase, Luxury, Premium8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
    2007-2013 Chevrolet AvalancheBlack Diamond LS, Black Diamond LT, Black Diamond LTZ, LS, LT, LTZ8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
    2004-2006, 2002 Chevrolet Avalanche 1500Base, LS, LT, North Face, On Road Edition, Z66, Z718 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
    2004-2006, 2002 Chevrolet Avalanche 2500Base, LS, LT8 Cyl 8.1 L GAS
    2003-2014 Chevrolet Express 1500Base, LS, LT8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
    2003-2017 Chevrolet Express 2500Base, LS, LT8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    2003-2017 Chevrolet Express 3500Base, LS, LT8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
    2004-2013, 2002 Chevrolet Silverado 1500Base, Hybrid, LS, LT, LTZ, SS, WT, XFE, Z71 Off-Road8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV), 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX
    View More
    Warning: California's Proposition 65

  • Customer Questions & Expert Answers

    Q:
    Is this 12677665 designed for my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 12677665 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    What should be done after raising the 2002 Cadillac Escalade? Posted by Customer
    A:
    Remove the exhaust manifold pipe nuts and lower the vehicle to access the exhaust manifold bolts, manifold, and gasket, which should be removed and discarded.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What is the first step to replace the right exhaust manifold on 4.8L, 5.3L, and 6.0L engines for the 2004 Cadillac Escalade ESV? Posted by Customer
    A:
    Remove the ignition coils and spark plugs, then raise and support the vehicle.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What is the final step after installing the exhaust manifold for the 2006 Cadillac Escalade EXT? Posted by Customer
    A:
    Raise the vehicle again, install the exhaust manifold pipe nuts, tightening them to 50 Nm (37 ft. lbs.), then lower the vehicle and reinstall the spark plugs and ignition coils.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What is the procedure for installing the exhaust manifold for the 2006 Chevrolet Avalanche 1500? Posted by Customer
    A:
    Install the exhaust manifold, a new gasket, and bolts. Tighten the bolts initially to 15 Nm (11 ft. lbs.), starting with the center two bolts and alternating side-to-side, then perform a final tightening to 25 Nm (18 ft. lbs.) using the same pattern.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What is the first step to remove the right exhaust manifold on an 8.1L engine for the 2006 Chevrolet Avalanche 2500? Posted by Customer
    A:
    Remove the wheelhouse panel and the oil level indicator.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What is the next step after connecting the EGR valve pipe for the 2003 Chevrolet Express 3500? Posted by Customer
    A:
    Reinstall the spark plug wires.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What is the first step in servicing the exhaust manifold for the 2006 Chevrolet Express 1500? Posted by Customer
    A:
    Begin by cleaning the exhaust manifold and heat shield in solvent, then dry the exhaust manifold with compressed air.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What is the final step in the process for the 2008 Chevrolet Express 2500? Posted by Customer
    A:
    Finally, install the engine cover.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What is the next step after disconnecting the spark plug wires for the 2007 Chevrolet Silverado 1500 Classic? Posted by Customer
    A:
    Remove the spark plug wire retainer bolts and position the wire harness on top of the engine.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What should be done if necessary regarding the heat shield for the 2004 Chevrolet Silverado 2500? Posted by Customer
    A:
    Remove the heat shield bolts and shield from the exhaust manifold.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What is the next step after installing the exhaust manifold for the 2006 Chevrolet Silverado 3500? Posted by Customer
    A:
    Install the spark plugs.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What type of threadlock should be applied to the exhaust manifold bolts for the 2007 Chevrolet Silverado 3500 Classic? Posted by Customer
    A:
    Apply a 5 mm (0.2 inch) wide band of threadlock GM P/N 12345493 (Canadian P/N 10953488) or equivalent.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What should be done with the exhaust manifold gasket for the 2001 Chevrolet Suburban 1500? Posted by Customer
    A:
    Bend over the exposed edge of the exhaust manifold gasket at the rear of the left cylinder head with a flat punch.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What should be placed between the manifold and the cylinder head for the 2009 Chevrolet Silverado 1500? Posted by Customer
    A:
    Place the NEW exhaust manifold gaskets.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What should be done after removing the spark plug wires for the 2009 Chevrolet Tahoe? Posted by Customer
    A:
    Remove the oil level indicator tube from the engine block, then remove the exhaust manifold bolts and the exhaust manifold itself.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What should be done after raising the 2009 GMC Savana 1500? Posted by Customer
    A:
    Separate the catalytic converter from the exhaust manifold, then lower the vehicle.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What should be done if necessary regarding the exhaust manifold heat shield for the 2007 GMC Sierra 1500 Classic? Posted by Customer
    A:
    Remove the exhaust manifold heat shield bolts and shield, and clean all gasket mating surfaces.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What needs to be removed to access the exhaust manifold for the 2007 GMC Sierra 3500 Classic? Posted by Customer
    A:
    Remove the catalytic converter to exhaust manifold nuts and lower the vehicle partway to work through the wheel opening.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What is the first step to replace the right side exhaust manifold on a V8 engine for the 2010 GMC Savana 2500? Posted by Customer
    A:
    Raise and support the vehicle.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What is the procedure for installing the exhaust manifold for the 2001 GMC Yukon XL 1500? Posted by Customer
    A:
    Install the exhaust manifold, a NEW gasket, and bolts. Tighten the exhaust manifold bolts in two passes: first to 15 Nm (11 ft. lbs.) starting with the center two bolts and alternating side-to-side, then to a final torque of 25 Nm (18 ft. lbs.) using the same pattern.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What should be done after removing the catalytic converter for the 2005 GMC Savana 3500? Posted by Customer
    A:
    Take off the engine cover and disconnect the EGR valve pipe from the exhaust manifold if equipped.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What should be removed after raising for the 2006 GMC Sierra 3500? Posted by Customer
    A:
    Remove the exhaust manifold heat shield bolts and nuts, and take off the left exhaust manifold heat shield.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What is the tightening procedure for the exhaust manifold bolts for the 2009 GMC Sierra 1500? Posted by Customer
    A:
    Tighten them first to 15 Nm (11 lb ft) starting with the center bolts and alternating side-to-side, then to a final pass of 20 Nm (15 lb ft) using the same pattern.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    What type of threadlock should be applied to the exhaust manifold bolts for the 2004 GMC Yukon? Posted by Customer
    A:
    Apply a 5 mm (0.2 inch) wide band of threadlock GM P/N 12345493 (Canadian P/N 10953488) or equivalent to the threads of the exhaust manifold bolts.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    Q:
    How should the exhaust manifold be installed for the 2004 GMC Yukon XL 2500? Posted by Customer
    A:
    Install the exhaust manifold with a new gasket and bolts, tightening the bolts first to 15 Nm (11 ft. lbs.) starting with the center two bolts and alternating side-to-side, then to a final pass of 25 Nm (18 ft. lbs.) using the same pattern.
    Posted by ChevyPartsGiant Specialist
    See vehicle specific detailed answers for this Exhaust Manifold
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

OEM GM Exhaust Manifold 12677665 Designed for Proper Fit and Performance

Original OEM GM parts deliver superior quality and meet all performance standards needed for optimal automotive operation. The authentic part identified by 12677665 Exhaust Manifold is available in the market under the name GM Exhaust Manifold. This genuine product has a full warranty coverage from the manufacturer available at all authorized GM dealers throughout the United States. This part 12677665 Exhaust Manifold fits certain Chevrolet Tahoe, Avalanche, Silverado 1500 models, as well as GMC Sierra 1500, Yukon, Sierra 2500 HD. Additionally, it is compatible with Cadillac Escalade, Escalade ESV, Escalade EXT and Hummer H2 models.
The original GM component designated by manufacturer part number 12677665 maintains top performance when functioning as the Manifold, Engine Exhaust Manifold unit. The component 12677665 is constructed from durable material and its dimensions span 9.2 x 5.3 x 25.1 inches while weighing 14.40 Pounds. The Direct Replacement component is ready in New condition to ensure full compatibility with your vehicle system. This component receives the designation of Manifold. The part 12677665 has available replacement options 12648339. GM manufacturer provides a warranty that ensures reliable operation of this product. The Shipping Policy and Return Policy pages outline complete details regarding shipping procedures and return processes.
If you want to save money in the long run on maintenance and repairs, you should choose OEM products because they're of the top level of durability. Are you on the quest of finding GM parts, our site is worth a visit. We stock an endless selection of high-quality GM components including things like ignition coils all the way through to fan shrouds and all at prices that can not be matched. You have nothing to worry about because all our OEM parts are covered with a manufacturer warranty, which guarantees superior quality and value.