BR70-41-990 Clutch Master Cylinder for Mazda

As the core actuator of the hydraulic clutch system, the BR7041990 Mazda clutch master cylinder converts the mechanical force input by the pedal into hydraulic thrust, accurately controls the separation and engagement of the clutch plate, and is especially suitable for the MX-3 (EC chassis), 323 C IV (BG chassis) and 323 F IV (BG chassis) produced between 1991 and 2000, covering a variety of engine versions from 1.6L to 1.8L.

The BR7041990 Clutch Master Cylinder For Mazda adopts a single piston structure design, and the piston seal is made of high-temperature resistant fluororubber. The temperature range covers -40℃ to 180℃, which can cope with high-frequency semi-clutch operation under congested urban road conditions. Its guide pin system has been nitrided and hardened, and with the double-layer dust cover design, it can effectively block more than 85% of the intrusion of mud and sand, reducing the risk of guide pin jamming. In response to environmental protection needs, some suppliers provide aluminum alloy versions, which are 28% lighter than the cast iron standard version.

If the vehicle has increased clutch pedal clearance, difficulty in shifting gears, or hydraulic leakage, it is recommended to check the master cylinder sealing system first. During installation, the torque specification must be strictly followed, and the bubbles must be completely removed by the two-stage pressure evacuation method. The DOT4 standard brake fluid must be replaced simultaneously to ensure hydraulic transmission efficiency. Insufficient lubrication of the shift fork may cause abnormal noise, and high-temperature resistant lithium-based grease must be applied regularly to avoid incomplete separation due to increased friction resistance.