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GM 12590275 Engine Coolant Thermostat Housing Assembly

2007-2008 GM

Customer Questions & Expert Answers (3)
12590275 GM Engine Coolant Thermostat Housing Assembly Illustration 1 of 1
  • Part Description
    HOUSING, Engine Coolant Thermostat
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number12590275
    Part DescriptionHOUSING, Engine Coolant Thermostat
    Other NamesThermostat Housing
    Item Dimensions10.2 x 9.8 x 4.3 inches
    Item Weight1.50 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12590275
    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
    2008 Chevrolet Cobalt4 Cyl 2.0LLEVEL 4 PERFORMANCE/SC (SS) 2 DOOR
    2008 Chevrolet HHR4 Cyl 2.0L5 DOOR HIGH ROOF HATCHBACK SS
    2007-2008 Pontiac Solstice4 Cyl 2.0L2 DOOR CONVERTIBLE, TURBO 2 DOOR CONVERTIBLE
    2007-2008 Saturn Sky4 Cyl 2.0L2 DOOR CONVERTIBLE, TURBO 2 DOOR CONVERTIBLE
  • 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 12590275 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What are some important things to check before assuming the Thermostat is the cause of a cooling system problem for the 2008 Chevrolet Cobalt? Posted by Fredrick C.
    A:
    It is important to check the coolant level, drivebelt tension, and temperature gauge operation. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Julian / Aug 09, 2023
    Q:
    What are some important things to check before assuming the Thermostat is the cause of a cooling system problem for the 2008 Chevrolet HHR? Posted by Berkeley M.
    A:
    It is important to check the coolant level, drivebelt tension, and temperature gauge operation. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Fernando / Sep 04, 2025

Genuine GM Part 12590275, the Right Choice

To ensure reliability, purchase GM part # 12590275 Engine Coolant Thermostat Housing Assembly. It is sometimes referred to as GM Thermostat, GM Thermostat Housing. 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 Chevrolet Cobalt, HHR models. It fits Pontiac Solstice. It also fits Saturn Sky.

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