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GM 10038440 Housing & Flange Asm

1984-1988 Pontiac Fiero

Customer Questions & Expert Answers (2)
10038440 GM Housing & Flange Asm 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 Number10038440
    Part DescriptionHOUSING, Engine Coolant Thermostat
    Other NamesThermostat Housing
    Item Dimensions10.0 x 4.4 x 4.5 inches
    Item Weight1.60 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU10038440
    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
    1984-1988 Pontiac Fiero4 Cyl 2.5L2 DOOR, GT 2 DOOR, SE 2 DOOR, SPORT 2 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 10038440 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    How to remove and install the Thermostat Housing and Thermostat on Pontiac Fiero? Posted by Redzone C.
    A:
    The thermostat housing is on the upper end of both the 2.5L four-cylinder and 2.8L V6 engines. To remove, twist the thermostat housing cap clockwise, then pull out the thermostat. Clean the housing and lubricate the O-ring with white grease. If replacing the housing or gasket, disconnect the radiator hose (expect some coolant spillage). Disconnect the coolant temperature sensor wire. If replacing the housing, remove the sensor with caution. Remove old gasket residue from the cylinder head. Check the housing for external damage or internal corrosion. Apply RTV sealant to the new gasket and position it. Install the housing, tightening bolts securely. Wrap the sensor threads with Teflon tape, reattach it, and reconnect its wire. Refill with coolant, install the thermostat and its cap. Start the engine and check for leaks.
    You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Xavier / Jul 01, 2023

Genuine GM Part 10038440, the Right Choice

To ensure reliability, purchase GM part # 10038440 Housing & Flange Asm. 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 Pontiac Fiero models.

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