Gates 34054S | Engine Coolant Thermostat

Part Number
Premium Engine Coolant Thermostat

Fits: 06-07 Buick Terraza, 06-11 Chevrolet Impala, 06-10 Chevrolet Malibu, 06-07 Chevrolet Monte Carlo, 06-09 Chevrolet Uplander, 06-10 Pontiac G6, 06-09 Pontiac Montana, 06-07 Saturn Relay, 07-08 Saturn Aura, 08-09 Saturn Vue, 09-11 Buick Lucerne

Special Price $26.34 Regular Price $30.99
In stock
Only 8 left
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Estimated Ship Date: 1 Business Day or Less

The premium thermostat incorporates an all stainless steel construction, larger heat motor and larger spring to provide superior performance.

These features provide:

  • Precision temperature control.
  • More efficient engine operation.
  • Faster engine warm up.
  • Fewer emissions.
  • Better fuel economy.

Gates - Driven By Possibility

BRAND: Gates


  • Engine Coolant Thermostat
  • Premium Engine Coolant Thermostat
  • Premium Engine Coolant Thermostat
  • 2011-06 Chevrolet, Impala, V-6 3.5 L, Thermostat


By-Pass Flange Diameter (in)1.1
DesignBottom By-Pass
Height Between Flanges1.89
Height from Flange (in).67
Includes Installation ToolNo
Jiggle Pin Weep HoleYes
MaterialStainless Steel, Copper
Number of Gaskets0
Number of Jiggle Pins/Check Valves1
Number of Seals1
Seal TypeO-Ring
Sealing Flange Outside Diameter1.73
Start to Open Temperature85
Start to Open Temperature185
TypePremium Thermostat

185 Degree| OE Temperature| Seal included


  • General Motors: 12591881
  • CARQUEST or Stant: 48808
  • Stant: 48808
  • Motorad: 511-185
  • Stant: 46808
  • NAPA: 450-185
  • CST: 51185
  • NAPA Belts/Hose: 34054
  • Stant: 38808
  • Carquest: 38808


  • 2006-2009 Chevrolet Uplander
  • 2009-2011 Buick Lucerne
  • 2006-2007 Saturn Relay
  • 2006-2009 Pontiac Montana
  • 2007-2008 Saturn Aura
  • 2006-2007 Buick Terraza
  • 2006-2007 Chevrolet Monte Carlo
  • 2008-2009 Saturn Vue
  • 2006-2010 Chevrolet Malibu
  • 2006-2011 Chevrolet Impala
  • 2006-2010 Pontiac G6
Customer Questions
When to replace the engine coolant thermostat?
The engine coolant thermostat should be replaced if it is not functioning properly or as a preventive maintenance measure after a certain mileage or time interval.
What is an engine coolant thermostat?
An engine coolant thermostat is a component that regulates the flow of coolant through the engine to maintain optimal operating temperature.
Will the engine coolant temperature sensor keep the car from starting?
In most cases, a malfunctioning engine coolant temperature sensor (ECT sensor) will not prevent the car from starting. The engine coolant temperature sensor (ECT sensor) is responsible for monitoring the temperature of the engine coolant and sending that information to the engine control unit (ECU). The ECU uses this information to make adjustments to the fuel mixture and ignition timing for optimal engine performance.
Does PartsHawk carry an engine coolant thermostat for Mazda 6?
Yes, PartsHawk carries an Engine Coolant thermostat for Mazda 6
What types of automotive products does Gates offer?
Gates offers a wide range of automotive products, including belts, hoses, tensioners, and more.
I'm looking for a replacement belt for my vehicle. Can you help me understand the different options available from Gates and recommend the best one for my specific make and model?
Yes, Gates offers a range of replacement belts for various applications. To find the best one for your specific make and model, it is recommended to consult the Gates website or reach out to their customer support.
Are there any specific maintenance for Gates products?
Yes, there are specific maintenance and installation guidelines to follow when using Gates products to ensure optimal performance and longevity.
Please, mind that only logged in users can submit questions

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