Four Seasons 86035 | Toyota Sienna Lower Engine Coolant Thermostat Housing

Part Number
Thermostat Housing

Fits: 04-06 Toyota Sienna

Special Price $111.59 Regular Price $123.99
Out of stock
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BRAND:Four Seasons


  • Toyota Sienna (06-04)
  • Engine Coolant Thermostat Housing
  • Includes quality gasket or O-ring to ensure proper seal (where applicable
  • Water Outlet
  • Thermostat Housing
  • Engine Coolant Thermostat Housing
  • Meets and/or exceeds OEM standard
  • Thermostat Housing
  • 100% leak tested
  • Direct-fit replacement for ease of installation
  • Thermostat Housing


California Proposition 65Warning: This product contains a chemical known to the State of California to cause cancer.
DescriptionEngine Coolant Components
Gasket Or Seal IncludedNot Included
Meets / Exceeds OEM?Yes
Stylew/o Thermostat
Thermostat Included?Not Included
TypeThermostat Housing


  • Cooling Depot: 86035
  • Motorad: CH7035
  • Compressor Works: 815855
  • Dorman: 9025860
  • Murray: 86035
  • NAPA Solutions: 60541361
  • Toyota: 163230A021
  • Four Seasons: W98565
  • Toyota: 1632320020
  • Toyota: 163230A020
  • Four Seasons: 86035


  • 2004-2006 Toyota Sienna - Position: Lower
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
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