Brake master cylinder
Also asked for as: master cylinder, brake master
What it does
Turns pedal force into hydraulic pressure for all four brakes.
Signs it needs replacing
- Pedal sinks slowly to the floor
- Spongy pedal
- Brake fluid leaking near the firewall
What to tell the shop
- Vehicle make, model and model year
- Engine size, and whether it is manual or automatic
- The number printed on the old part, or a photo of it
- Whether you want genuine, OEM or a local replacement