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Buick 12537495 Engine Coolant Pump (W/Gasket & Bolts)

1985-1990 Buick

Customer Questions & Expert Answers (2)
12537495 GM Engine Coolant Pump (W/Gasket & Bolts) Product Photo 1 of 1
  • Part Description
    Pump Kit, Water (W/Gasket & Bolts)
  • Replaces
    12537892, 12536421
  • 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 Number12537495
    Part DescriptionPump Kit, Water (W/Gasket & Bolts)
    Other NamesWater Pump, Water Pump Assembly
    Item Dimensions12.5 x 12.2 x 4.1 inches
    Item Weight4.30 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces12537892, 12536421
    ManufacturerGeneral Motors
    SKU12537495
    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
    1986-1990 Buick Century6 Cyl 3.3LCUSTOM 2 DOOR, CUSTOM 4 DOOR, CUSTOM STATION WAGON, LIMITED 2 DOOR, LIMITED 4 DOOR
    1986-1990 Buick Electra6 Cyl 3.8L2 DOOR, 4 DOOR, COUPE 2 DOOR, LIMITED 2 DOOR, LIMITED 4 DOOR, SEDAN 4 DOOR, T-TYPE COUPE 2 DOOR, T-TYPE SEDAN 4 DOOR, ULTRA SEDAN 4 DOOR
    1988-1990, 1986 Buick Lesabre6 Cyl 3.0L, 6 Cyl 3.8L2 DOOR, CUSTOM 2 DOOR, CUSTOM 4 DOOR, LIMITED 2 DOOR, LIMITED 4 DOOR
    1988-1990 Buick Reatta6 Cyl 3.8L2 DOOR, CONVERTIBLE, REATTA, RIVIERA, T TYPE
    1988-1990, 1986 Buick Riviera6 Cyl 3.8L2 DOOR, CONVERTIBLE, REATTA, RIVIERA, T TYPE
    1986-1990 Buick Skylark6 Cyl 3.0L, 6 Cyl 3.3L2 DOOR, 4 DOOR, CUSTOM, CUSTOM 2 DOOR, GRAN SPORT 2 DOOR, LIMITED, LIMITED 2 DOOR, LIMITED 4 DOOR, LUXURY EDITION 4 DOOR, SKYLARK, SOMERSET, T-TYPE
    1985-1987 Buick Somerset6 Cyl 3.0L2 DOOR, CUSTOM, LIMITED, LIMITED 2 DOOR, LIMITED 4 DOOR, REGAL, REGAL LIMITED, SOMERSET, T-TYPE
  • 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 12537495 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    How to remove the fan, fan clutch, and pulleys attached to the Water Pump shaft on Buick Century? Posted by Ventura H.
    A:
    Remove the fan, fan clutch and any pulleys attached to the water pump shaft. Loosen the clamps attaching the coolant hoses to the water pump. With the clamps loosened, disconnect the coolant lines from the water pump. Loosen and remove the water pump retainer bolts. Drain the cooling system. Remove the fan shroud, if necessary for clearance. Loosen the belt or belts, then remove the fan blades and pulley or pulleys from the hub on the water pump shaft. Disconnect the hose from the water pump inlet and the heater hose from the nipple. Remove the bolts, then remove the pump and gasket from the timing case cover or engine block. Install the pump assembly with a new gasket. Bolts and lock washers must be torqued evenly. Connect the radiator hose to the pump inlet and the heater hose to the nipple. Fill the cooling system and check all points of possible coolant leaks. Install the fan pulley or pulleys and the fan blade. Install the belt or belts and adjust for correct tension.
    You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Jeremy / Oct 04, 2025

Genuine GM Part 12537495, the Right Choice

To ensure reliability, purchase GM part # 12537495 Engine Coolant Pump (W/Gasket & Bolts). 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, Electra, Lesabre models.

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