The Komatsu 3EB6405020 Cylinder Repair Set is an authentic OEM seal kit designed for maintaining and repairing hydraulic cylinders in a range of Komatsu mini excavators, including the PC20MR, PC27MR, PC30MR, PC35MR, PC40MR, and PC45MR series. This essential repair set ensures optimal sealing performance, preventing hydraulic fluid leaks and extending the operational lifespan of the machinery's hydraulic system. Manufactured to Komatsu's rigorous quality standards, it guarantees a precise fit and reliable function for critical hydraulic components.