The Case IH 42581939 Regulator is an authentic OEM component designed to maintain stable voltage within the electrical systems of various Case IH Maxxum and Puma series tractors. Measuring 95 mm in length, 51 mm in width, and 51 mm in height, and weighing 0.12 kg, this genuine regulator ensures reliable operation and protects sensitive electronic components from voltage fluctuations, critical for consistent machine performance and longevity across compatible models.