Model Compatibility: Fits Metris 2.0L, Infinity Q50 2.0L, and Infinity Q60 2.0L vehicles as a direct replacement for the coolant thermostat. Part Number Compatibility: Replaces part numbers A2742000015, A2742003300, 2742000615, and A2742000615 in applicable vehicle applications. Functional Purpose: Maintains engine operating temperature by regulating coolant flow through the cooling system, restoring thermal management function. Installation Requirement: Designed for straightforward installation in the same location and orientation as the thermostat without modification. Specification Match: Matches the physical dimensions, mounting configuration, and temperature activation characteristics of the thermostat for proper system integration.