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Buick 12582320 Main Seal

1990-2009 Buick

Customer Questions & Expert Answers (3)
12582320 GM Main Seal Product Photo 1 of 3
  • Part Description
    Seal, Engine Rear Main Bearing
  • Position
    Rear
  • Replaces
    25534760
  • Manufacturer
    General Motors
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  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Buick
    Manufacturer Part Number12582320
    Part DescriptionMain Seal; Seal, Engine Rear Main Bearing
    Item Dimensions4.4 x 4.5 x 0.3 inches
    Item Weight0.50 Pounds
    PositionRear
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces25534760
    ManufacturerGeneral Motors
    SKU12582320
    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
    2005-2009 Buick Allure6 Cyl 3.8LCX (US)/ALLURE CX (CAN), CX 4 DOOR, CXL 4 DOOR, CXL(US)/ALLURE CXL(CAN), CXS 4 DOOR, CXS(US)/Allure CXS(CAN), SUPER SERIES 4 DOOR
    1991-1993 Buick Century6 Cyl 3.3LCUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 4 DOOR, SPECIAL 4 DOOR, SPECIAL STATION WAGON
    2005-2009 Buick LaCrosse6 Cyl 3.8LCX (US)/ALLURE CX (CAN), CX 4 DOOR, CXL 4 DOOR, CXL(US)/ALLURE CXL(CAN), CXS 4 DOOR, CXS(US)/Allure CXS(CAN), SUPER SERIES 4 DOOR
    1991-2005 Buick Lesabre6 Cyl 3.8L2 DOOR, CUSTOM, CUSTOM 4 DOOR, LIMITED, LIMITED 2 DOOR, LIMITED 4 DOOR
    2006-2008 Buick Lucerne6 Cyl 3.8LCX 4 DOOR, CXL, CXL 4 DOOR, CXS
    1991-2005 Buick Park Avenue6 Cyl 3.8LPARK AVENUE, ULTRA
    1991 Buick Reatta6 Cyl 3.8L2 DOOR, CONVERTIBLE, RIVIERA
    1990-2004 Buick Regal6 Cyl 3.8L2 DOOR, 4 DOOR, CUSTOM, CUSTOM 2 DOOR, CUSTOM 4 DOOR, GL, GLX, GRAN SPORT 2 DOOR, GRAN SPORT 4 DOOR, GS, LIMITED, LIMITED 2 DOOR, LIMITED 4 DOOR, LS, REGAL
    1995-1999, 1991-1993 Buick Riviera6 Cyl 3.8L2 DOOR, CONVERTIBLE, RIVIERA
    1991-1993 Buick Skylark6 Cyl 3.3L2 DOOR, 4 DOOR, CUSTOM 2 DOOR, CUSTOM 4 DOOR, GRAN SPORT 2 DOOR, GRAN SPORT 4 DOOR, LIMITED 2 DOOR, LIMITED 4 DOOR, LUXURY EDITION 4 DOOR
  • Customer Questions & Expert Answers

    Q:
    I'm wondering if this is complete and correct part for my vehicle.
    A:
    You can Select Your Vehicle to check if 12582320 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    How should the seal housing be positioned for the next steps regarding the Crankshaft Seal for the 1999 Pontiac Grand Prix? Posted by Mumin T.
    A:
    Position the seal housing on wood blocks on a workbench. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Julian / Sep 19, 2022
    Q:
    What is recommended for installing the new Crankshaft Seal for the 1998 Pontiac Grand Prix? Posted by Zakery D.
    A:
    A special tool is recommended for installing the new oil seal. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Henry / Jun 16, 2025

Genuine GM Part 12582320, the Right Choice

To ensure reliability, purchase GM part # 12582320 Main Seal. It is sometimes referred to as Buick 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 Buick Allure, Century, Lesabre models.

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