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Make sure this part fits

Buick 12640448 Pump,Oil

2004-2021 Buick

Customer Questions & Expert Answers (3)
GM 12640448 Pump,Oil
GM 12640448 Pump,Oil
GM 12640448 Pump,Oil
GM 12640448 Pump,Oil
  • Part Description
    PUMP, Engine Oil Pump
  • Replaces
    12590152, 12590016, 12584298
  • Manufacturer
    General Motors
Make sure this part fits
$140.06 MSRP: $243.75
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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 Buick
    Manufacturer Part Number12640448
    Part DescriptionPUMP, Engine Oil Pump
    Other NamesOil Pump, Water Pump
    Item Dimensions10.1 x 5.5 x 5.5 inches
    Item Weight3.10 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces12590152, 12590016, 12584298
    ManufacturerGeneral Motors
    SKU12640448
    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
    2010-2015, 2005-2008 Buick Allure6 Cyl 3.0L, 6 Cyl 3.6LCX (US)/ALLURE CX (CAN), CX 4 DOOR, CX 4 DOOR SEDAN, CXL 4 DOOR, CXL 4 DOOR SEDAN, CXL(US)/ALLURE CXL(CAN), CXS 4 DOOR, CXS 4 DOOR SEDAN, CXS(US)/Allure CXS(CAN), SPS 4 DOOR SEDAN, SUPER SERIES 4 DOOR
    2008-2021 Buick Enclave6 Cyl 3.6LBASE EXTENDED 4 DOOR SUV, PREMIUM 1 EXTENDED 4 DOOR SUV, PREMIUM 2 EXTENDED 4 DOOR SUV, SPORT UTILITY VEHICLE 2WD, SPORT UTILITY VEHICLE 4WD, SPORT UTILITY VEHICLE AWD
    2010-2016, 2005-2008 Buick LaCrosse6 Cyl 3.0L, 6 Cyl 3.6LCX (US)/ALLURE CX (CAN), CX 4 DOOR, CX 4 DOOR SEDAN, CXL 4 DOOR, CXL 4 DOOR SEDAN, CXL(US)/ALLURE CXL(CAN), CXS 4 DOOR, CXS 4 DOOR SEDAN, CXS(US)/Allure CXS(CAN), SPS 4 DOOR SEDAN, SUPER SERIES 4 DOOR
    2004-2006 Buick Rendezvous6 Cyl 3.6LAWD, RENDEZVOUS

  • 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 12640448 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How to remove and reinstall the oil pump in an engine? Posted by Customer
    A:
    Remove the timing chains. After noting the installed position, remove the timing chain sprocket from the crankshaft. Remove the oil pump retaining bolts and slide the pump off the end of the crankshaft (Oil pump retaining bolts). Remove the timing chain guide from the oil pump housing then remove the oil pump cover and withdraw the rotors from the pump body. Remove the snap-ring from the side of the pump housing and withdraw the cap, spring and plunger from the oil pump housing. These components are the oil pressure relief valve assembly. Clean the components with solvent, dry them thoroughly and inspect for any obvious damage. Also check the bolt holes for damaged threads and the splined surfaces on the crankshaft sprocket for any apparent damage. If any of the components are scored, scratched or worn, replace the entire oil pump assembly. There are no serviceable parts currently available. If re-using the oil pump, assemble the pressure relief valve components and the rotors to the oil pump housing. Prior to installing the cover, prime the pump by pouring clean motor oil between the rotors. Install the cover and tighten the retaining bolts. Position the oil pump over the end of the crankshaft and align the flats on the crankshaft with the flats on the oil pump drive gear. Make sure the pump is fully seated against the block. Install the oil pump mounting bolts and tighten them to the torque. The remainder of installation is the reverse of removal. Add oil and coolant as necessary. Run the engine and check for oil and coolant leaks. Check the oil pressure.
    Posted by GMPartsGiant Specialist
    Q:
    Is there an o-ring at the back of the pump around the larger diameter hole? Posted by Customer: 2009 Buick Enclave (2WD)
    A:
    NO THERE IS NOT...
    Posted by GMPartsGiant Specialist 9/8/2023
    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 12640448, the Right Choice

Your vehicle deserves only genuine OEM GM parts and accessories. To ensure reliability, purchase GM part # 12640448 Pump,Oil. It is sometimes referred to as Buick Oil Pump. 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 Buick Allure, Enclave, LaCrosse models.

Affordable, reliable and built to last, GM part # 12640448 Pump,Oil 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 Buick parts information, click here.

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