GM Genuine Parts Engine Coolant Thermostat
OE
Pack of 1

GM Genuine Parts Engine Coolant Thermostat

GM Part #12559807

ACDelco Part #131-128

MSRP$96.48*

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
Start to Open Temperature82 °C / 179.6 °F
Height Between Flanges1.975 in / 50.16 mm
Height3.02 in / 76.71 mm
Sealing Flange Outside Diameter2.12 in / 53.85 mm
ClassificationOE
Gasket Or Seal IncludedNo
Seal TypeGasket
Jiggle Pin Weep HoleYes
TypeConventional
Installation Tool IncludedNo

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

ModelBody StyleTrimYear(s)
Lucerne2006, 2007, 2008, 2009, 2010, 2011