ISR Performance Colder Temp Thermostat Nissan 240SX 1989-1998 Vehicle Model_Cooper BC valves are one piece

BC valves are one piece design with a friction welded Stellite tip for the best possible performance

This works well on stock cars

fully machined surfaces and swirl polishing under their heads

no oil pan

up to 4 points of adjustment

ISR Performance Colder Temp Thermostat Nissan 240SX 1989-1998 Vehicle Model_Cooper BC valves are one piecePart #: IS 21200 60 ISR Performance colder temp thermostat for KA24DE and SR20DET. Good upgrade for High performance engines, where the ISR Performance units opens at 60 deg celsius compared to factory 76. 5 deg celsius. Cool down your motor before heat build up! Once the engine is fully warmed up the ISR Performance thermostat will open up at a lower temperature than standard thermostats, also allowing the coolant to flow through the engine sooner