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Buick 26033578 Seal, Differential Drive Pinion Gear

1982-1996 Buick

Customer Questions & Expert Answers (12)
GM 26033578 Seal, Differential Drive Pinion Gear
  • 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
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • 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. Posted by GMPartsGiant Specialist
    A:
    You can Select Your Vehicle to check if 26033578 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    What should you check in the pinion seal bore in the carrier for the 1985 Buick Regal? Posted by Customer
    A:
    Check the pinion seal bore in the carrier for burrs and remove them.
    Posted by GMPartsGiant Specialist
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    Q:
    How should the pinion nut be tightened for the 1995 Chevrolet Blazer? Posted by Customer
    A:
    The pinion nut should be tightened until the original number of threads are exposed. The torque required to rotate the pinion should be measured and the nut should be tightened incrementally until it matches the recorded figure, slightly exceeding it to compensate for the new oil seal.
    Posted by GMPartsGiant Specialist
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    Q:
    What's the next step after installing the companion flange and applying sealant for the 1997 Chevrolet C1500? Posted by Customer
    A:
    Install the washer and pinion nut.
    Posted by GMPartsGiant Specialist
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    Q:
    How should the pinion flange be removed of the 1986 Chevrolet Caprice? Posted by Customer
    A:
    Use a suitable tool to hold the pinion flange still while removing the self-locking pinion nut. Unscrew and remove the pinion nut. Withdraw the companion flange using a two or three-legged extractor if necessary.
    Posted by GMPartsGiant Specialist
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    Q:
    How do you remove the pinion nut and companion flange of the 1982 Chevrolet El Camino? Posted by Customer
    A:
    Mark the flange position, secure the yoke, remove the pinion nut, and pull off the companion flange with a puller.
    Posted by GMPartsGiant Specialist
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    Q:
    How should the pinion flange be installed for the 1996 Chevrolet Express? Posted by Customer
    A:
    Install the pinion flange, aligning it with the marks made, and tighten the pinion nut to draw the flange into place without hammering.
    Posted by GMPartsGiant Specialist
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    Q:
    How should you install the new seal into the axle housing for the 1997 Chevrolet K1500? Posted by Customer
    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.
    Posted by GMPartsGiant Specialist
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    Q:
    What should be done before removing the pinion nut and companion flange for the 1994 Chevrolet S10? Posted by Customer
    A:
    Before removing the pinion nut and companion flange, alignment marks should be made on the pinion shaft, nut, and flange, and the number of threads visible between the nut and shaft should be counted.
    Posted by GMPartsGiant Specialist
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    Q:
    What should be done after tightening the pinion nut for the 1995 GMC Jimmy? Posted by Customer
    A:
    After tightening the pinion nut, the driveshaft should be connected, the wheels should be installed, and the vehicle should be lowered. The lug nuts should be tightened to the proper torque.
    Posted by GMPartsGiant Specialist
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    Q:
    How should the companion flange be installed for the 1994 GMC Sonoma? Posted by Customer
    A:
    The companion flange should be installed by aligning the mating marks and tightening the pinion nut if needed. Non-hardening sealant should be applied to the spline ends on the flange.
    Posted by GMPartsGiant Specialist
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    Q:
    How should the companion flange be reinstalled of the 1982 Oldsmobile Cutlass? Posted by Customer
    A:
    When reinstalling the companion flange, perform the following steps:Align the mating marks made before dismantling.
    Posted by GMPartsGiant Specialist
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    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 26033578, the Right Choice

To ensure reliability, purchase GM part # 26033578 Seal, Differential Drive Pinion Gear. 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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