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Buick 19244751 Alternator

2004-2005 Buick Rainier

Customer Questions & Expert Answers (2)
19244751 GM Alternator Product Photo 1 of 3
  • Part Description
    Generator, Engine Electrical
  • Replaces
    10464476, 15200109, 15263859, 20989650, 22781130, 19151921
  • Manufacturer
    General Motors
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  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Buick
    Manufacturer Part Number19244751
    Part DescriptionAlternator; Generator, Engine Electrical
    Item Dimensions9.2 x 7.8 x 7.4 inches
    Item Weight17.00 Pounds
    ConditionRemanufactured
    Fitment TypeDirect Replacement
    Replaces10464476, 15200109, 15263859, 20989650, 22781130, 19151921
    ManufacturerGeneral Motors
    SKU19244751
    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
    2004-2005 Buick Rainier8 Cyl 5.3L4 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 19244751 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    How to remove and install an Alternator on Chevrolet Trailblazer? Posted by Alta W.
    A:
    You should disconnect the cable from the battery. Take out the drivebelt. For six-cylinder models, unbolt the air conditioning line mounting bracket at engine lift hook. Remove the right engine lift hook and alternator mounting bolts then remove the alternator from the engine. Disconnect electrical connectors from alternator. On V8 models, disconnect output wire and electrical connector from alternator. Remove mounting bolts and remove alternator from engine. If you are replacing the alternator, take the old one with you when buying a replacement unit. Ensure that new/rebuilt unit looks just like old alternator. Look at terminals-they must be of same number, size and location as on old alternator. Finally, look at identification numbers-they will be stamped directly into housing. Ensure numbers are one and same on both alternators. Many new/rebuilt alternators come without a pulley installed so you may need to swap the pulley from your Id unit to the new/rebuilt one. When shopping for an alternator ask about pulleys; some stores might offer this service free of charge. Installation is reverse of removal. Finally tighten up mounting bolts with specific torque values provided in manual. Install Drivebelt. Check Charging voltage to ensure that Alternator is working well enough.
    You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Nicholas / Dec 18, 2025

Genuine GM Part 19244751, the Right Choice

To ensure reliability, purchase GM part # 19244751 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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