Model Compatibility: Fits ISM 2350 and ISM 2370 thermostats for N14 engines as a direct replacement part. Part Number Match: Replaces part number 4318947 for thermostat applications in specified ISM engine models. Functional Equivalence: Restores thermostat and temperature regulation function in compatible N14 engines. Application Scope: Designed for use with ISM 2350 and ISM 2370 engine configurations requiring the 4318947 thermostat. Installation Purpose: Serves as a functional replacement component to maintain factory-specified thermal control in applicable N14 engine systems.