GM Genuine Parts Engine Coolant Thermostat
OE
Pack of 1

GM Genuine Parts Engine Coolant Thermostat

GM Part #12680457

ACDelco Part #131-198

MSRP$82.56*

ACDelco GM Original Equipment Engine Coolant Thermostats control the flow of coolant through your vehicle's radiator to help the engine reach and maintain its optimal operating temperature, and are GM-recommended replacements for your vehicle's original components.

  • Controls the flow of coolant through your vehicle's radiator to help the engine reach and maintain its optimal operating temperature
  • GM-recommended replacement part for your GM vehicle's original factory component
  • Offering the quality, reliability, and durability of GM OE

Pack of 1

About this product

ACDelco GM Original Equipment Engine Coolant Thermostats control the flow of coolant through your vehicle's radiator to help the engine reach and maintain its optimal operating temperature, and are GM-recommended replacements for your vehicle's original components. These original equipment engine coolant thermostats have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

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  • Controls the flow of coolant through your vehicle's radiator to help the engine reach and maintain its optimal operating temperature
  • GM-recommended replacement part for your GM vehicle's original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function

MaterialStainless Steel
Gasket Or Seal IncludedNo
Height1.97 in / 50 mm
Start to Open Temperature82 °C / 179.6 °F
ClassificationOE
Jiggle Pin Weep HoleYes
Installation Tool IncludedNo
Sealing Flange Outside Diameter1.259 in / 32 mm
TypeConventional

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.

Good Maintenance Practices:

  • Have cooling system inspected immediately if instrument panel-mounted temperature gauge indicates engine overheating
  • Use the recommended coolant type for your vehicle

Signs of wear for engine coolant thermostats include but are not limited to:

  • Coolant leaks
  • Engine overheating
  • Lack of available heat in the vehicle cabin

ModelBody StyleTrimYear(s)
Silverado 2500 HD2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Silverado 3500 HD2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Silverado 4500 HD2019, 2020, 2021, 2022, 2023, 2024, 2025
Silverado 5500 HD2019, 2020, 2021, 2022, 2023, 2024, 2025
Silverado 6500 HD2019, 2020, 2021, 2022, 2023, 2024, 2025