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▶ Vehicle Fitments
Year
Make
Model
1989-1993
Infiniti
M F31
2003-2008 Infiniti G35, and 2009-2013 Infiniti G37 Thermostat by ISR Performance
ISR Performance colder thermostat for VQ35HR and VQ37VHR Engines. Good upgrade for High-performance engines, The ISR units open at 68 degrees Celsius compared to the factory at 78 degrees Celsius. Cool down your motor before the heat builds up!
Once the engine is fully warmed up the ISR thermostat will open up at a lower temperature than standard thermostats, also allowing the coolant to flow through the engine sooner thus reducing and maintaining cooler engine temperatures.
