GM Genuine Parts Engine Coolant Thermostat Housing
OE
Pack of 1

GM Genuine Parts Engine Coolant Thermostat Housing

GM Part #12741009

ACDelco Part #12741009

MSRP$121.14*

GM Genuine Parts Engine Coolant Thermostat Housings are designed, engineered, and tested to rigorous standards, and are backed by General Motors.

  • Houses the thermostat and allows connection between the radiator hose and the engine
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle

Pack of 1

About this product

GM Genuine Parts Engine Coolant Thermostat Housings are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These housings hold the thermostat and are a connection point for the radiator hose inlet or outlet and may also include ports for sensors or switches. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

  • Houses the thermostat and allows connection between the radiator hose and the engine
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type
  • GM regularly updates production and service part designs to integrate new materials and technologies

MaterialAluminum
Gasket Or Seal IncludedYes
ColorNatural
Inlet Quantity1
Inside Diameter1.3 in / 33 mm
Mounting Hole Diameter0.31 in / 8 mm
ClassificationOE
Height4.53 in / 115 mm
Bolt Hole Quantity2
Flange Thickness8mm
Mounting Hardware IncludedYes
Inlet Port Diameter1.3 in / 33 mm
Flange Length75mm
Flange Width2.4 in / 61 mm
Grade TypeStandard Replacement
Bolt Hole Center To Bolt Hole Center2.76 in / 70 mm

24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

ModelBody StyleTrimYear(s)
BlazerBase, LT, Premier, RS2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026