The Chuuparts 203-43-52162 203-43-52163 Throttle Control Lever Spring Assembly is a must-have for Komatsu excavators in the PC120-6 and PC130-6 series. This kit replaces the worn-out throttle control lever spring, ensuring smooth and efficient operation. The spring assembly is compatible with all PC120-6 and PC130-6 models, making it versatile and easy to use. Its high-quality construction and precision design guarantee precise throttle control, reducing vibrations and increasing durability. When combined with the rest of the kit, this part provides a complete overhaul, enhancing overall performance and extending the life of your excavator. With the Chuuparts assembly, you can rely on a reliable and long-lasting solution that meets or exceeds OEM quality.