Search result for: 4702858010
CYLINDER SUB-ASSY, BRAKE MASTER W/PLATE
Part number: 4702858010
Availability: 21
Weight, kg: 1.101
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Make: Toyota
Made in: Japan

CYLINDER SUB-ASSY, BRAKE MASTER W/PLATE
Part number: 4702858010
Availability: 21
Weight, kg: 1.101
Processing: 2-3 days
Make: Toyota
Made in: Japan

Brake Master Cylinder with Mounting Plate
This hydraulic unit is the heart of your braking system. When you press the pedal, it converts pedal force into brake fluid pressure and sends it through the lines to the calipers/wheel cylinders. The mounting plate helps keep alignment solid, reduces flex, and supports stable pedal feel ?.
Why this part is needed
Without strong, clean hydraulic pressure, the brakes cannot clamp evenly. This component maintains consistent pressure for safe stops in traffic, on hills, and during emergency braking.
How it works
Inside are precision pistons and seals. Pedal input moves the pistons, building pressure in separate circuits for safety. Fluid ports feed the brake lines, while internal valves help maintain smooth response and prevent sudden pressure loss.
What happens if it’s broken
A failing unit may cause a sinking/spongy pedal, longer stopping distance, brake warning light, or fluid leaks at the rear seal. In severe cases, you can lose one or both brake circuits—dangerous and not roadworthy ⚠️.
Compatibility
- 6 Wagon
