20885005 Brake Master Cylinder for Chevrolet

Chevrolet 20885005 Brake Master Cylinder is a hydraulic brake core component designed for Impala series models. As the pressure conversion center of the brake system, its core function is to accurately convert the driver's pedal force into hydraulic energy, and achieve balanced distribution of front and rear wheel braking force through a dual-chamber series structure. The master cylinder is cast with high-strength alloy material, and the master cylinder diameter is precisely engineered to withstand 32MPa hydraulic pressure.

The master cylinder adopts a dual-chamber series structure and fast filling valve technology to ensure hydraulic stability under special braking conditions. The piston sealing system is made of high-temperature resistant fluororubber material, with an operating temperature range of -40℃ to 180℃, a stable friction coefficient of 0.38-0.42, and a hydraulic pressure fluctuation range of less than 0.5MPa after 15 consecutive emergency braking.

In product application, if the vehicle has an increase in brake pedal virtual position or uneven braking force distribution, it is recommended to check the master cylinder sealing system first. After the mileage exceeds 80,000 kilometers, if the scratch depth on the inner wall of the master cylinder exceeds 0.1mm or the piston stroke deviation exceeds 3mm, the assembly must be replaced directly and the brake fluid must be updated simultaneously.