Description This genuine Cummins 3076489 coolant thermostat is engineered to precisely control engine operating temperature in demanding on-highway and industrial applications. By maintaining the correct coolant temperature, it helps protect critical engine components, supports efficient combustion and reduces thermal stress during cold starts and heavy loads. Designed for use in a wide range of Cummins engine families, it is suitable for NH, NT, L10, M11, ISM11, QSM11, N14, K19 and QSK19 engines. Key features and benefits include: • Genuine Cummins 3076489 coolant thermostat • Engineered for NH, NT, L10, M11, ISM11, QSM11, N14, K19 and QSK19 engines • Temperature control in the 180–200°F (82–90°C) operating range • Supports stable engine temperature, performance and durability • Cross reference numbers include 146077 and 201737