The Komatsu 5039903 is a genuine OEM potentiometer designed for Komatsu PC-8 series hydraulic excavators. This critical component provides precise electrical resistance changes, essential for accurate control of various machine functions. Manufactured to Komatsu's rigorous standards, it ensures optimal performance and durability in demanding operating conditions. Confirmed fitment for PC200-8, PC210-8, PC220-8, and PC240-8 series models, including their M0, LC, and N1 variants. It measures approximately 70 mm in length, 50 mm in width, and 50 mm in height, with a weight of 0.05 kg.