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Buick 22781131 Alternator

2006 Buick Rainier

Customer Questions & Expert Answers (3)
22781131 GM Alternator Product Photo 1 of 3
  • Part Description
    Generator, Engine Electrical
  • Replaces
    19118686, 15847291, 94665137, 15222342, 15124532, 15222341, 15226003, 20989651
  • Manufacturer
    General Motors
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  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Buick
    Manufacturer Part Number22781131
    Part DescriptionAlternator; Generator, Engine Electrical
    Item Dimensions9.3 x 8.2 x 7.9 inches
    Item Weight16.30 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces19118686, 15847291, 94665137, 15222342, 15124532, 15222341, 15226003, 20989651
    ManufacturerGeneral Motors
    SKU22781131
    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
    2006 Buick Rainier8 Cyl 5.3L4 DOOR
  • 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 22781131 fits your vehicle.
    Posted and answered by GM Parts Specialist Henry
    Q:
    What is the first step in the removal process for the Alternator in the 2005 Chevrolet Astro? Posted by Verified Customer
    A:
    The first step in the removal process is disconnecting the cable from the negative terminal of the battery. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Julian / Aug 26, 2022
    Q:
    What components do you need to remove before replacing the Alternator for the 2009 Chevrolet Express? Posted by Ferney H.
    A:
    Remove the coolant reservoir, air filter housing, and upper fan shroud. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Bob / Aug 30, 2025

Genuine GM Part 22781131, the Right Choice

To ensure reliability, purchase GM part # 22781131 Alternator. It is sometimes referred to as Buick Alternator. 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 Rainier models.

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