31420-52070 Clutch Master Cylinder for Toyota

Toyota 31420-52070 Clutch Master Cylinder is a core hydraulic transmission component designed for small passenger cars. As an original certified OE number component, its core function is to convert the mechanical force input by the pedal into hydraulic thrust and accurately control the separation and engagement of the clutch plate. The master cylinder is cast with a high-strength plastic and aluminum alloy composite material, and the surface is treated with corrosion resistance. The piston diameter is 15.9 mm, the thread specification is M12×1, and it can withstand 32MPa hydraulic pressure.

31420-52070 Clutch Master Cylinder for Toyota adopts a single piston structure, and the piston seal is made of fluororubber. The temperature range covers -40℃ to 180℃, which can effectively cope with high-frequency semi-clutch operations under urban congested road conditions. The guide pin system is nitrided and hardened, and with the double-layer dust cover design, it can block more than 85% of the intrusion of mud and sand, and reduce the risk of guide pin jamming by 60%. Test data shows that after 500,000 durability cycle tests, the hydraulic response time deviation of this component is less than 0.1 second, and the friction coefficient is stable at 0.38-0.42. In response to the needs of hybrid models, its hydraulic conduction path and motor reverse torque are synchronized at the millisecond level.

As a preferred component for small car repair projects, the master cylinder has passed the JIS D2601 extreme environment test, with a hydraulic response delay of less than 0.15 seconds at a low temperature of -40°C, and the liquid temperature rise after continuous braking in desert conditions is controlled within 15°C. Standard use can extend the life of the clutch plate to 80,000-100,000 kilometers, and the recognition of the semi-clutch point is improved by 40%.