Make sure this part fits

Buick 12371989 Water Pump Kit

1987-1991 Buick

Customer Questions & Expert Answers (3)
12371989 GM Water Pump Kit Illustration 1 of 1
  • Part Description
    Pump Kit,Water
  • 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 Number12371989
    Part DescriptionPump Kit,Water
    Other NamesPump, Water Pump, Water Pump Assembly
    Item Dimensions6.9 x 6.4 x 5.4 inches
    Item Weight3.20 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12371989
    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
    1987-1989 Buick Century6 Cyl 2.8LCUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR
    1988-1991 Buick Regal6 Cyl 2.8L, 6 Cyl 3.1L2 DOOR, 4 DOOR, CUSTOM 2 DOOR, CUSTOM 4 DOOR, LIMITED, LIMITED 2 DOOR, LIMITED 4 DOOR, REGAL
  • 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 12371989 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What can a failure in the Water Pump cause of the 1988 Pontiac Grand Prix? Posted by Deniz U.
    A:
    A failure in the water pump can cause serious engine damage due to overheating. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Jeremy / Nov 28, 2025
    Q:
    What is the first step in disconnecting the battery of the 1989 Pontiac Grand Prix before working on the Water Pump? Posted by Rohert D.
    A:
    Disconnect the negative battery cable from the battery. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Nicholas / May 02, 2026

Genuine GM Part 12371989, the Right Choice

To ensure reliability, purchase GM part # 12371989 Water Pump Kit. It is sometimes referred to as Buick Water Pump. 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 Century, Regal models.

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