OEM Chrysler 300 Thermostat

Chrysler 300 Thermostat Parts and Q&A

• Thermostat
  68237102AA
  Q: How to Maintain the Thermostat on a 2.7L Engine on Chrysler 300?

  A:

  To work on the engine coolant thermostat, always disconnect the negative battery cable first. Never remove the pressure cap when the system is hot and pressurized or you may get seriously burned by the coolant. Release all the cooling liquid inside the vehicle. After that, remove the lower hose from the thermostat housing. Pull away the nuts on the heater tube flange studs and undo the bolt at the start of the heater tube bracket. Get the heater tube from inside the thermostat housing and put it somewhere where it won't get in the way. After that, remove the bolt and the two studs before you remove the thermostat housing, O-ring and thermostat.
• Thermostat
  52028898AJ
  Q: How to Service and Repair a Thermostat on a 2.7L Engine on Chrysler 300?

  A:

  Start by cleaning the gasket surfaces on the thermostat to service or repair a 2.7L engine. Set the thermostat with its bleed valve at 12 o'clock, then place the O-Ring into the thermostat housing after the tabs on the seal. If you took off the studs before, then replace them now. After that, join the thermostat, thermostat housing, O-ring and bolt by tightening their bolts to 12 Nm (105 in. lbs.). Rub coolant onto the new O-ring of the heater return tube and place the flange over the two studs, holding connection with nuts tightened to 6 Nm (53 in. lbs.). Turn the starter bolt until it reaches 54.3 Nm (40 ft. lbs.) and then join the lower radiator hose to the thermostat housing. After that, fill the coolant again and link the negative cable.