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Buick 26033578 Differential Drive Pinion Gear Seal

1982-1996 Buick

Customer Questions & Expert Answers (3)
26033578 GM Differential Drive Pinion Gear Seal Product Photo 1 of 1
  • Part Description
    SEAL, Differential Drive Pinion Shaft Bearing
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Buick
    Manufacturer Part Number26033578
    Part DescriptionSEAL, Differential Drive Pinion Shaft Bearing
    Other NamesPinion Seal
    Item Dimensions3.4 x 3.4 x 0.6 inches
    Item Weight0.40 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU26033578
    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
    1982-1984 Buick Electra6 Cyl 4.1L, 8 Cyl 5.0L, 8 Cyl 5.7L Diesel2 DOOR, 4 DOOR, COUPE 2 DOOR, ELECTRA ESTATE WAGON, LIMITED 2 DOOR, LIMITED 2 DOOR RWD, LIMITED 4 DOOR, LIMITED 4 DOOR RWD, SEDAN 4 DOOR
    1982-1989 Buick Estate Wagon6 Cyl 3.8L, 6 Cyl 4.1L, 8 Cyl 5.0L, 8 Cyl 5.7L DieselCUSTOM 2 DOOR, CUSTOM 4 DOOR, ELECTRA ESTATE WAGON, ESTATE WAGON, LIMITED 2 DOOR, LIMITED 2 DOOR COLLECT SP EDIT, LIMITED 4 DOOR, LIMITED 4 DOOR COLLECT SP EDIT
    1988-1990, 1982-1985 Buick Lesabre6 Cyl 3.8L, 6 Cyl 4.1L, 8 Cyl 5.0L, 8 Cyl 5.7L DieselCUSTOM 2 DOOR, CUSTOM 4 DOOR, ELECTRA ESTATE WAGON, ESTATE WAGON, LIMITED 2 DOOR, LIMITED 2 DOOR COLLECT SP EDIT, LIMITED 4 DOOR, LIMITED 4 DOOR COLLECT SP EDIT
    1982-1987 Buick Regal6 Cyl 3.8L, 6 Cyl 4.1L, 6 Cyl 4.3L Diesel, 8 Cyl 5.0L, 8 Cyl 5.7L Diesel2 DOOR, 4 DOOR, REGAL, STATION WAGON
    1991-1996 Buick Roadmaster8 Cyl 5.0L, 8 Cyl 5.7L4 DOOR, LIMITED, LIMITED SEDAN, STATION WAGON
  • Customer Questions & Expert Answers

    Q:
    I would like to confirm if this is the correct part number for my vehicle. Please advise. Thank you.
    A:
    You can Select Your Vehicle to check if 26033578 fits your vehicle.
    Posted and answered by GM Parts Specialist Henry
    Q:
    How should the pinion flange and Differential Seal be installed for the 1996 Chevrolet Express? Posted by Adan H.
    A:
    Install the pinion flange, aligning it with the marks made, and tighten the pinion nut to draw the flange into place without hammering. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Henry / Feb 12, 2025
    Q:
    How should you install the new Differential Seal into the axle housing for the 1997 Chevrolet K1500? Posted by Phagamas C.
    A:
    Tap the new seal evenly into position with a seal installation tool or a large socket, ensuring it enters the housing squarely and is tapped into its full depth. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Jose / Jun 12, 2022

Genuine GM Part 26033578, the Right Choice

To ensure reliability, purchase GM part # 26033578 Differential Drive Pinion Gear Seal. It is sometimes referred to as Buick Differential 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 Electra, Lesabre, Regal models.

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