The Cummins 5292738 Genuine 180 Degree Coolant Thermostat is a critical component for maintaining the optimal operating temperature of diesel engines. Weighing 1 lb and measuring 4"x4"x3", it's designed to ensure efficient engine performance. Manufactured by Cummins, known for reliability, this thermostat operates at a 180-degree temperature range, crucial for diesel engine health. For purchase details, refer to the provided link.