THERMOSTAT ASSEMBLY FITMENT - 2006 for Lexus for GS300 2007-2011 for Lexus for GS350 2006-2010 for Lexus for IS250 2006-2010 for Lexus for IS350
THERMOSTAT REFERENCE NUMBER - 16031-31020
Superior Performance - Premium Thermostat:Precise temperature response, steady coolant circulation, avoids engine overheating/slow warm-up
Precise Fit & Direct Replacement: OE-matched design, vehicle-compatible, no modifications required, easy install, factory-grade performance
Precise Temperature Control – Intelligently adjusts the coolant circulation path to ensure the engine operates within the optimal temperature range at all times, thereby improving engine efficiency and extending its service life