ISR Performance Thermostat 68 Degree Nissan VQ35DE w/ Water Port FRS_2013-2016 that's why we are the

that's why we are the best

oil feed line

The Ampliform is a mesh inspired

Designed specifically for K-series engines

Our fitting is made from CNC stainless steel w/ high temp o-rings to ensure a leak free seal

ISR Performance Thermostat 68 Degree Nissan VQ35DE w/ Water Port FRS_2013-2016 that's why we are thePart #: IS 21200 31U13 ISR Performance colder thermostat for VQ35DE Engines. Good upgrade for High performance engines, The ISR units opens at 68 deg celsius compared to factory 78 deg celsius. Cool down your motor before 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