Thermostat and Radiator Cap/Hose Specs ...

Some usefull information on the thermostats and radiator cap for the Mitsubishi Montero Sport 3.0L V6. These are the factory specifications and presume you are using or testing a factory part. I know for a fact that some after-market thermostats and radiator caps vary significantly. If you're unsure what your thermostat or radiator cap is doing a good quality - accurate - infrared thermometer and/or radiator and cap pressure tester can be invaluable.

• Radiator cap opening pressure PSI: 10.7 - 15


• 88C/190F Thermostat (July 1998->on Engine 6G72 3.0L):
---Thermostat valve opening temperature F: 190.4 +/- 3.6 degrees
---Full-opening temperature F: 212


• 82C/180F Thermostat (1997->June 1998 Engine 6G72 3.0L):
---Thermostat valve opening temperature F: 180 +/- 2.7 degrees
---Full-opening temperature F: 203


• Upper radiator hose inside diameter: 1.31" (33.27mm)

• Common radiator hose adapter sizes
---1 3/8" (1.375")
---34mm (1.338")
---32mm (1.259")