Make sure this part fits

GM 12591866
Rear Main Seal, Green Line

1987-2022 GM

Customer Questions & Expert Answers (30)
GM 12591866 Rear Main Seal, Green Line
GM 12591866 Rear Main Seal, Green Line
  • Part Description
    Seal, Engine Rear Main Bearing; Engine Crankshaft Seal; Crankshaft Seal
  • Position
    Rear
  • Replaces
    90298408, 90325572, 90280462, 90354378
  • 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 GM
    Manufacturer Part Number12591866
    Part DescriptionSeal, Engine Rear Main Bearing; Engine Crankshaft Seal; Crankshaft Seal
    Item Dimensions4.5 x 4.4 x 1.1 inches
    Item Weight0.30 Pounds
    PositionRear
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces90298408, 90325572, 90280462, 90354378
    ManufacturerGeneral Motors
    SKU12591866
    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 Trim Engine
    2016-2020 Buick EnvisionBase, Essence, Preferred, Premium, Premium II4 Cyl 2.0 L GAS, 4 Cyl 2.5 L FLEX, 4 Cyl 2.5 L GAS
    2018-2019, 2010-2016 Buick LaCrosseBase, Convenience, CX, CXL, Essence, Leather, Preferred, Premium4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV), 4 Cyl 2.5 L MILD HYBRID EV-GAS (MHEV)
    2011-2017 Buick RegalBase, CXL, GS, Premium, Sport Touring4 Cyl 2.0 L FLEX, 4 Cyl 2.0 L GAS, 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
    2018-2020 Buick Regal SportbackAvenir, Base, Essence, Preferred, Preferred II4 Cyl 2.0 L GAS
    2018-2020 Buick Regal TourXBase, Essence, Preferred4 Cyl 2.0 L GAS
    1987-1988 Buick SkyhawkCustom, Limited, SE, Sport, T-Type4 Cyl 2.0 L GAS
    2012-2017 Buick VeranoBase, Convenience, Leather, Premium, Sport Touring, Turbo4 Cyl 2.0 L GAS, 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS
    2013-2019 Cadillac ATSBase, Luxury, Performance, Premium4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
    2016-2018 Cadillac CT6Base, Luxury, Plug-In4 Cyl 2.0 L GAS, 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV)
    2014-2019, 2003-2004 Cadillac CTSBase, Luxury, Luxury Sport, Performance, Premium4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS
    View More
  • Customer Questions & Expert Answers

    Q:
    Is this 12591866 designed for my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 12591866 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the rear crankshaft seal on Chevrolet Cobalt? Posted by Customer
    A:
    You need to begin the crankshaft rear oil seal replacement by removing the transmission followed by the Flywheel while watching for outside crankshaft damage or chamber damage from tools. A flat-bladed tool should be used to pry the crankshaft rear oil seal. Use the rear main seal installer (J 42067) to correctly fit the new seal during the installation process. First install the Flywheel while torquing its bolts to 53 n.m (39 lb ft) followed by an added 25 degrees rotation before reinstalling the transmission.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the rear crankshaft seal on Chevrolet HHR? Posted by Customer
    A:
    In order to change the crankshaft rear oil seal you are supposed to, first fully remove the Flywheel. Avoid damaging the outer diameter of the crankshaft or chamber with the help of any tool. Use a flat-bladed tool to pry out the crankshaft rear oil seal. Next, perform the installation of a new crankshaft rear oil seal and mark the rear main seal with the rear main seal installer (J 42067) and reinstall the Flywheel.
    Posted by ChevyPartsGiant Specialist
    Q:
    What is the final step after installing the new crankshaft front oil seal for the 2010 Buick LaCrosse? Posted by Customer
    A:
    Reinstall the crankshaft balancer.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What should be done after removing the engine flywheel for the 2010 Buick LaCrosse? Posted by Customer
    A:
    Take off the oil pan.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    How should you prepare the new rear main oil seal before installation for the 2004 Cadillac CTS? Posted by Customer
    A:
    Coat the lip of the new rear main oil seal with clean engine oil.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What components need to be removed after disconnecting the battery for the 2000 Cadillac Catera? Posted by Customer
    A:
    Remove the intake air resonator, intake plenum, and timing belt cover.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What should be done after removing the flywheel bolts for the 2000 Cadillac Catera? Posted by Customer
    A:
    Take off the flywheel from the crankshaft.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    How do you install the new rear main oil seal for the 2001 Cadillac Catera? Posted by Customer
    A:
    Use the Rear Main Oil Sealer Installer (J 42067) to install the new seal and clean the rear crankshaft flange.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    How should you prepare the new rear main oil seal before installation for the 2003 Cadillac CTS? Posted by Customer
    A:
    Coat the lip of the new rear main oil seal with clean engine oil.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    How do you remove the crankshaft rear oil seal for the 2004 Chevrolet Malibu? Posted by Customer
    A:
    Pry the crankshaft rear oil seal using a flat-bladed tool.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    How should the flywheel bolts be tightened for the 2004 Chevrolet Cavalier? Posted by Customer
    A:
    Tighten the flywheel bolts to 53 Nm (39 ft. lbs.) plus an additional 25 degrees.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    How do you prepare the new seal for installation for the 2002 Chevrolet Cavalier? Posted by Customer
    A:
    Lubricate the seal bore to the seal surface with engine oil.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What precaution should be taken while removing the flywheel for the 2005 Chevrolet Cobalt? Posted by Customer
    A:
    Take care not to damage the outside diameter of the crankshaft or chamber with any tool.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What tool is needed to install a new crankshaft rear oil seal for the 2006 Chevrolet Cobalt? Posted by Customer
    A:
    Utilize the Rear Main Seal Installer (J 42067) to install a new crankshaft rear oil seal.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What is the first step to replace the crankshaft rear oil seal for the 2005 Chevrolet Cavalier? Posted by Customer
    A:
    First, remove the transmission and the flywheel.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What tool is used for the installation of the crankshaft front oil seal for the 2003 Chevrolet Cavalier? Posted by Customer
    A:
    Utilize the Camshaft/Front Main Seal Installer (J 35268-A) to install the crankshaft front oil seal.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    How do you extract the old oil seal for the 2007 Chevrolet Cobalt? Posted by Customer
    A:
    Utilize a flat-bladed tool to extract the seal from the front cover.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What tool is used for installing the crankshaft front oil seal for the 2010 Chevrolet Cobalt? Posted by Customer
    A:
    Utilize the Camshaft/Front Main Seal Installer (J 35268-A) to install the crankshaft front oil seal.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What is the first step to replace the crankshaft rear oil seal for the 2010 Chevrolet HHR? Posted by Customer
    A:
    First, remove the flywheel.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What tool is used for installing a new crankshaft rear oil seal for the 2008 Chevrolet HHR? Posted by Customer
    A:
    Use the Rear Main Seal Installer (J 42067) to install a new crankshaft rear oil seal.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What is the final step after installing the new crankshaft rear oil seal for the 2007 Chevrolet HHR? Posted by Customer
    A:
    Reinstall the flywheel.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What is the final step after installing the crankshaft front oil seal for the 2006 Chevrolet HHR? Posted by Customer
    A:
    Reinstall the crankshaft balancer.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    How do you remove the crankshaft rear oil seal for the 2008 Chevrolet Malibu? Posted by Customer
    A:
    Pry out the crankshaft rear oil seal with a flat-bladed tool.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What is the first step to replace the crankshaft rear oil seal for the 2006 Chevrolet Malibu? Posted by Customer
    A:
    First, remove the transmission.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    How should the crankshaft sealing surface be prepared for the 2005 Chevrolet Malibu? Posted by Customer
    A:
    Clean it with a clean, lint-free towel and inspect for burrs or sharp edges, removing any with crocus cloth.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What is the final step after installing the new oil seal for the 2009 Chevrolet HHR? Posted by Customer
    A:
    Reinstall the flywheel.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    How do you remove the seal from the front cover for the 2009 Chevrolet Malibu? Posted by Customer
    A:
    Use a flat-bladed tool to remove the seal.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    How do you remove the old crankshaft rear oil seal for the 2010 GMC Terrain? Posted by Customer
    A:
    Use a flat-bladed tool to pry out the old crankshaft rear oil seal.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    How do you extract the seal from the front cover for the 2010 GMC Terrain? Posted by Customer
    A:
    Use a flat-bladed tool to extract the seal from the front cover.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

OEM GM 12591866, Excellent Performance and Perfect Fitment

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