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Pontiac 12591866 Seal Assembly, Crankshaft Rear Oil

1987-2010 Pontiac

Customer Questions & Expert Answers (43)
GM 12591866 Seal Assembly, Crankshaft Rear Oil
GM 12591866 Seal Assembly, Crankshaft Rear Oil
GM 12591866 Seal Assembly, Crankshaft Rear Oil
GM 12591866 Seal Assembly, Crankshaft Rear Oil
  • Part Description
    SEAL, Engine Rear Main Bearing
  • Position
    Rear
  • Replaces
    90298408, 90325572, 90280462, 90354378
  • Manufacturer
    General Motors
Make sure this part fits
$14.65 MSRP: $36.43
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  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers

  • Related Parts

    Shop for related parts for your vehicle

  • Product Specifications

    BrandGenuine Pontiac
    Manufacturer Part Number12591866
    Part DescriptionSEAL, Engine Rear Main Bearing
    Other NamesRear Main 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 Engine Important vehicle option details
    2007-2010 Pontiac G54 Cyl 2.2L, 4 Cyl 2.4L2 DOOR, 4 DOOR, GT 2 DOOR, GT 4 DOOR, LS 2 DOOR, LS 4 DOOR, SE 2 DOOR, SE 4 DOOR, SPORT 2 DOOR, SPORT 4 DOOR
    2006-2010 Pontiac G64 Cyl 2.4LGT 2 DOOR CONVERTIBLE, GT 2 DOOR NOTCHBACK, GT 4 DOOR NOTCHBACK, GTP 2 DOOR CONVERTIBL, GTP 2 DOOR NOTCHBACK, GXP 2 DOOR NOTCHBACK, GXP 4 DOOR NOTCHBACK, SE 4 DOOR NOTCHBACK, SE1 2 DOOR NOTCHBACK, SE1 4 DOOR NOTCHBACK
    2002-2005, 1987-1989 Pontiac Grand Am4 Cyl 2.0L, 4 Cyl 2.2L2 DOOR, 4 DOOR, GT 2 DOOR, GT 2 DOOR COUPE, GT 4 DOOR, GT1 2 DOOR, GT1 2 DOOR COUPE, GT1 4 DOOR, LE 2 DOOR, LE 4 DOOR, SE 2 DOOR, SE 4 DOOR, SE 4 DOOR SEDAN, SE1 2 DOOR, SE1 4 DOOR
    1989-1990 Pontiac LeMans4 Cyl 2.0L2 DOOR, 4 DOOR
    2005-2006 Pontiac Pursuit4 Cyl 2.0L, 4 Cyl 2.2L, 4 Cyl 2.4L2 DOOR, 4 DOOR, LEVEL 4 PERFORMANCE (SS) 2 DOOR, LEVEL 4 PERFORMANCE/SC (SS) 2 DOOR, LEVEL ONE (LS) 2 DOOR, LEVEL ONE (LS) 4 DOOR, LEVEL THREE (SS) 2 DOOR, LEVEL THREE (SS) 4 DOOR, LEVEL TWO (LT) 2 DOOR, LEVEL TWO (LT) 4 DOOR
    2006-2010 Pontiac Solstice4 Cyl 2.0L, 4 Cyl 2.4L2 DOOR CONVERTIBLE, 2 DOOR COUPE(TARGA), TURBO 2 DOOR CONVERTIBLE
    1987-1994 Pontiac Sunbird4 Cyl 2.0L2 DOOR, 4 DOOR, CONVERTIBLE, GT 2 DOOR, GT 4 DOOR, GT CONVERTIBLE, LE 2 DOOR, LE 4 DOOR, LE CONVERTIBLE, SE 2 DOOR, SE 2 DOOR NOTCHBACK, SE 2 DOOR PLAINBACK HATCHBACK, SE 4 DOOR, SE CONVERTIBLE, SE STATION WAGON, STATION WAGON
    2002-2005 Pontiac Sunfire4 Cyl 2.2L2 DOOR, 4 DOOR, GT 2 DOOR

  • 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 12591866 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How to replace a one-piece rear main oil seal on Chevrolet Cobalt? Posted by Customer
    A:
    The one-piece rear crankshaft seal is pressed into the engine block and the crankcase reinforcement section. Remove the transaxle, the clutch components, if equipped, and the flywheel. Pry out the old seal with a special seal removal tool or a flat-blade screwdriver. Caution: To prevent an oil leak after the new seal is installed, be very careful not to scratch or otherwise damage the crankshaft sealing surface or the bore in the engine block. Clean the crankshaft and seal bore in the block thoroughly and degrease these areas by wiping them with a rag soaked in lacquer thinner or acetone. Lubricate the lip of the new seal and the outer diameter of the crankshaft with engine oil. Position the new seal onto the crankshaft. Make sure the edges of the new oil seal are not rolled over. Note: When installing the new seal, if so marked, the words THIS SIDE OUT on the seal must face out, toward the rear of the engine. Use a special rear crankshaft seal installation tool or a socket with the exact diameter of the seal to drive the seal in place. Make sure the seal is not off-set; it must be flush along the entire circumference of the engine block and the crankcase reinforcement section. The remainder of installation is the reverse of removal.
    Posted by GMPartsGiant Specialist
    Q:
    How to replace a one-piece rear main oil seal on Chevrolet HHR? Posted by Customer
    A:
    The one-piece rear crankshaft seal is pressed into the engine block and the crankcase reinforcement section. Remove the transaxle, the clutch components, if equipped, and the flywheel. Pry out the old seal with a special seal removal tool or a flat-blade screwdriver. Caution: To prevent an oil leak after the new seal is installed, be very careful not to scratch or otherwise damage the crankshaft sealing surface or the bore in the engine block. Clean the crankshaft and seal bore in the block thoroughly and degrease these areas by wiping them with a rag soaked in lacquer thinner or acetone. Lubricate the lip of the new seal and the outer diameter of the crankshaft with engine oil. Position the new seal onto the crankshaft. Make sure the edges of the new oil seal are not rolled over. Note: When installing the new seal, if so marked, the words THIS SIDE OUT on the seal must face out, toward the rear of the engine. Use a special rear crankshaft seal installation tool or a socket with the exact diameter of the seal to drive the seal in place. Make sure the seal is not off-set; it must be flush along the entire circumference of the engine block and the crankcase reinforcement section. The remainder of installation is the reverse of removal.
    Posted by GMPartsGiant Specialist
    Q:
    How do you replace the rear main oil seal in four cylinder engine on Saturn Vue? Posted by Customer
    A:
    The one-piece rear Crankshaft Seal is pressed into the engine block and the crankcase reinforcement section. Begin by removing the transaxle, the clutch components if equipped, and the flywheel. Pry out the old seal using a special seal removal tool or a flat-blade screwdriver. Clean the crankshaft and seal bore in the block thoroughly, degreasing these areas with a rag soaked in brake system cleaner. Lubricate the lip of the new seal and the sealing surface of the crankshaft with engine oil. Position the new seal onto the crankshaft, ensuring the edges are not rolled over. If marked, the words THIS SIDE OUT on the seal must face out, toward the rear of the engine. Use a special rear Crankshaft Seal installation tool or a socket of the same diameter as the seal to drive it in place, ensuring it is driven in squarely and is flush along the entire circumference of the engine block and crankcase reinforcement section. The remainder of the installation follows the reverse order of removal.
    Posted by GMPartsGiant Specialist
    Q:
    How to remove and install a rear main oil seal in four cylinder engine on Saturn LS? Posted by Customer
    A:
    The one-piece rear crankshaft seal is pressed into the engine block and the crankcase reinforcement section. Remove the transaxle, the clutch components, if equipped, and the flywheel. Pry out the old seal with a special seal removal tool or a flat blade screwdriver. To prevent an oil leak after the new seal is installed, be very careful not to scratch or otherwise damage the crankshaft sealing surface or the bore in the engine block. Clean the crankshaft and seal bore in the block thoroughly and degrease these areas by wiping them with a rag soaked in lacquer thinner or acetone. Lubricate the lip of the new seal and the outer diameter of the crankshaft with engine oil. Position the new seal onto the crankshaft. Make sure the edges of the new oil seal are not rolled over. When installing the new seal, if so marked, the words THIS SIDE OUT on the seal must face out, toward the rear of the engine. Use a special rear crankshaft seal installation tool or a socket with the exact diameter of the seal to drive the seal in place. Make sure the seal is not off-set; it must be flush along the entire circumference of the engine block and the crankcase reinforcement section. The remainder of installation is the reverse of removal.
    Posted by GMPartsGiant Specialist
    Q:
    How to replace a one-piece rear main oil seal on Saturn ION? Posted by Customer
    A:
    The one-piece rear crankshaft seal is pressed into the engine block and the crankcase reinforcement section. Remove the transaxle, the clutch components, if equipped, and the flywheel. Pry out the old seal with a special seal removal tool or a flat-blade screwdriver. Caution: To prevent an oil leak after the new seal is installed, be very careful not to scratch or otherwise damage the crankshaft sealing surface or the bore in the engine block. Clean the crankshaft and seal bore in the block thoroughly and degrease these areas by wiping them with a rag soaked in lacquer thinner or acetone. Lubricate the lip of the new seal and the outer diameter of the crankshaft with engine oil. Position the new seal onto the crankshaft. Make sure the edges of the new oil seal are not rolled over. Note: When installing the new seal, if so marked, the words THIS SIDE OUT on the seal must face out, toward the rear of the engine. Use a special rear crankshaft seal installation tool or a socket with the exact diameter of the seal to drive the seal in place. Make sure the seal is not off-set; it must be flush along the entire circumference of the engine block and the crankcase reinforcement section. The remainder of installation is the reverse of removal.
    Posted by GMPartsGiant Specialist
    Q:
    How should the new seal be prepared before installation for the 2010 Cadillac CTS? Posted by Customer
    A:
    Apply clean engine oil or multi-purpose grease to the outer edge of the new seal.
    Posted by GMPartsGiant Specialist
    Q:
    What is the first step in the process of replacing the seal for the 2012 Cadillac CTS? Posted by Customer
    A:
    The first step is to remove the timing belt and crankshaft drive gear.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What should be done after installing the crankshaft balancer for the 2004 Cadillac CTS? Posted by Customer
    A:
    The remainder of the installation follows the reverse order of removal.
    Posted by GMPartsGiant Specialist
    Q:
    What is the next step after positioning the housing for the 2004 Cadillac CTS? Posted by Customer
    A:
    Remove the dowel pins and install the remaining rear main oil seal housing bolts, tightening them to the specified torque before removing the seal protector.
    Posted by GMPartsGiant Specialist
    Q:
    What is the final step after installing the new seal for the 2003 Cadillac CTS? Posted by Customer
    A:
    Install the flywheel/driveplate, and complete the installation by reversing the removal steps.
    Posted by GMPartsGiant Specialist
    Q:
    How should you secure the 2000 Saturn LS before working on it? Posted by Customer
    A:
    Raise the vehicle and support it securely on jackstands.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    How should the new seal be prepared before installation for the 2006 Cadillac CTS? Posted by Customer
    A:
    Lubricate the outside diameter of the new seal.
    Posted by GMPartsGiant Specialist
    Q:
    What are the final steps in the installation process for the 2007 Chevrolet Cobalt? Posted by Customer
    A:
    Install a new center bolt and tighten it to the specified torque. Ensure you use a new pulley bolt. The remainder of the installation is the reverse of the removal procedure. Finally, reconnect the battery.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What should be done to the mounting surfaces before installing the new seal housing for the 2009 Chevrolet Equinox? Posted by Customer
    A:
    Thoroughly clean the mounting surfaces of the oil pan, rear main oil seal housing, and engine block of old gasket material and sealer, wiping the gasket surfaces with a rag soaked in brake system cleaner.
    Posted by GMPartsGiant Specialist
    Q:
    What is the correct way to position the new seal for the 2015 Chevrolet Equinox? Posted by Customer
    A:
    Position the new seal onto the crankshaft, ensuring the edges are not rolled over.
    Posted by GMPartsGiant Specialist
    Q:
    What is the first step in the process for the 2017 Chevrolet Equinox? Posted by Customer
    A:
    Remove the transaxle and the driveplate.
    Posted by GMPartsGiant Specialist
    Q:
    How do you remove the oil seal from the cover for the 2007 Chevrolet Equinox? Posted by Customer
    A:
    Carefully pry the oil seal out of the cover. If a seal removal tool is unavailable, you can partially thread a self-tapping screw into the seal and use pliers as a lever to extract it.
    Posted by GMPartsGiant Specialist
    Q:
    What should be applied to the outer edge of the new seal before installation for the 2014 Chevrolet Equinox? Posted by Customer
    A:
    Apply clean engine oil or multi-purpose grease to the outer edge of the new seal.
    Posted by GMPartsGiant Specialist
    Q:
    What should be done after installing the crankshaft pulley for the 2007 Chevrolet Equinox? Posted by Customer
    A:
    The remainder of the installation follows the reverse order of removal, and finally, reconnect the battery.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    How should the 2007 Chevrolet HHR be prepared for this task? Posted by Customer
    A:
    To prepare the vehicle, raise it and support it securely on jackstands. Additionally, remove the splash shield from below the engine compartment by removing the splash shield mounting bolts.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What is the first step in replacing the one-piece rear main oil seal for the 2018 Chevrolet Malibu? Posted by Customer
    A:
    The first step is to remove the trans axle and the drive plate.
    Posted by GMPartsGiant Specialist
    Q:
    What needs to be removed before accessing the rear main oil seal for the 2011 GMC Acadia? Posted by Customer
    A:
    The driveplate and oil pan need to be removed.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What is supplied as an assembly for the rear main oil seal for the 2016 GMC Terrain? Posted by Customer
    A:
    The rear main oil seal is supplied as an assembly consisting of the oil seal and housing.
    Posted by GMPartsGiant Specialist
    Q:
    What should be done after disconnecting the battery for the 2011 GMC Terrain? Posted by Customer
    A:
    After disconnecting the battery, raise the vehicle and support it securely on jackstands. Then, take off the splash shield from below the engine compartment by removing its mounting fasteners.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What should you do if you are replacing the crankshaft front oil seal for the 2019 Chevrolet Malibu? Posted by Customer
    A:
    If replacing the crankshaft front oil seal, proceed to the next steps.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    How should the pulley hub be prepared before reinstalling the crankshaft pulley for the 2014 GMC Terrain? Posted by Customer
    A:
    Lubricate the pulley hub with clean engine oil.
    Posted by GMPartsGiant Specialist
    Q:
    Why is it important to avoid scratching the crankshaft sealing surface for the 2015 GMC Terrain? Posted by Customer
    A:
    Scratching or damaging the crankshaft sealing surface or the bore in the engine block can lead to oil leaks after the new seal is installed.
    Posted by GMPartsGiant Specialist
    Q:
    What should be checked before installing the crankshaft pulley for the 2012 GMC Acadia? Posted by Customer
    A:
    Check the surface on the pulley hub that the oil seal rides on. If the surface has been grooved from long-time contact with the seal, the pulley should be replaced with a new one.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What tool is necessary for installing the new seal for the 2010 GMC Terrain? Posted by Customer
    A:
    Obtain a special installation tool EN-48108, which is necessary for properly installing the new seal.
    Posted by GMPartsGiant Specialist
    Q:
    How is the crankshaft front oil seal removed for the 2000 Saturn LS? Posted by Customer
    A:
    Use a seal puller to remove the crankshaft front oil seal.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What is the first step in removing the crankshaft pulley for the 2016 GMC Terrain? Posted by Customer
    A:
    The first step is to take off the crankshaft pulley and note the installation depth and orientation of the seal, ensuring the new one is installed the same way.
    Posted by GMPartsGiant Specialist
    Q:
    What are the final steps after installing the new seal for the 2007 Pontiac G6? Posted by Customer
    A:
    Finally, reinstall the flywheel/driveplate and then the transaxle.
    Posted by GMPartsGiant Specialist
    Q:
    What are the initial steps to remove the old seal for the 2002 Saturn Vue? Posted by Customer
    A:
    Remove the timing belt, the crankshaft position sensor, and the crankshaft sprocket.
    Posted by GMPartsGiant Specialist
    Q:
    How should the old seal be removed for the 2003 Saturn Vue? Posted by Customer
    A:
    Pry out the old seal with a screwdriver, taking care not to damage the surface of the crankshaft, as this could cause the new seal to leak.
    Posted by GMPartsGiant Specialist
    Q:
    What should be done to the new seal before installation for the 2006 Pontiac G6? Posted by Customer
    A:
    The lip of the new seal and the outer diameter of the crankshaft should be lubricated with engine oil.
    Posted by GMPartsGiant Specialist
    Q:
    What should be done to the mounting surfaces before installation for the 2008 Pontiac G6? Posted by Customer
    A:
    Thoroughly clean the mounting surfaces of the oil pan, rear main oil seal housing, and engine block of old gasket material and sealer, wiping the gasket surfaces with a rag soaked in brake system cleaner.
    Posted by GMPartsGiant Specialist
    Q:
    What is the first step in removing the cranks aft pulley for the 2007 Pontiac G6? Posted by Customer
    A:
    Remove the cranks aft pulley and note how the seal is installed; the new one must be installed to the same depth and facing the same way.
    Posted by GMPartsGiant Specialist
    Q:
    What is the procedure for installing the new seal for the 2006 Pontiac G6? Posted by Customer
    A:
    Coat the lip of the new seal with clean engine oil and drive it into the bore with a seal driver or a socket slightly smaller in diameter than the seal, ensuring the open side faces into the engine.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    How should the new seal be installed for the 2006 Saturn Vue? Posted by Customer
    A:
    Drive it into the bore with a seal driver or a slightly smaller socket, ensuring the open side of the seal faces into the engine.
    Posted by GMPartsGiant Specialist
    Q:
    How is the crankshaft pulley removed for the 2007 Saturn ION? Posted by Customer
    A:
    Use a breaker bar and socket to remove the crankshaft pulley center bolt. A large pin spanner can be used to prevent the pulley from rotating while the bolt is loosened. Discard the old bolt and obtain a new one for installation. It's necessary to lock the pulley in position using a strap wrench or a large pin spanner. Wrap a length of the old drivebelt around the pulley for a good grip if using a strap wrench. Slide the puller off the nose of the crankshaft. If the pulley is stuck, use a puller that bolts to the three threaded holes in the pulley hub. Additionally, use a spacer to avoid damaging the crankshaft.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Crankshaft Seal
    Q:
    What tool should be used to reinstall the crankshaft pulley for the 2008 Pontiac G6? Posted by Customer
    A:
    Use a vibration damper installation tool to press the crankshaft pulley onto the crankshaft.
    Posted by GMPartsGiant Specialist
    Q:
    How do you complete the installation for the 2006 Saturn Vue? Posted by Customer
    A:
    Complete the installation by reversing the removal steps and reconnecting the battery.
    Posted by GMPartsGiant Specialist
    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 12591866, the Right Choice

To ensure reliability, purchase GM part # 12591866 Seal Assembly, Crankshaft Rear Oil. It is sometimes referred to as Pontiac Crankshaft Seal. 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 Pontiac G5, Grand Am, Pursuit models.

GMPartsGiant.com is a leading supplier of genuine GM parts and accessories such as GM 12591866 Seal Assembly, Crankshaft Rear Oil. You're certainly in the right place if you're searching for the great cost-effective OEM GM parts. Look no further than our vast inventory of genuine GM parts offered at unbeatable online prices, all of which are backed by the manufacturer's warranty. Not to forget, our hassle-free return policy and quick delivery service ensure a smooth shopping experience for you. For detailed Pontiac parts information, click here.

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