Defender · Defender 90 / 110 / 130 · 1990s–2016
Defender (Classic) master cylinder
Brake master cylinders and reservoirs for Land Rover models.
Matching master cylinder to a Defender (Classic)
The Defender (Classic) (Defender 90 / 110 / 130, 1990s–2016) was sold here with 5 different engines. Gearbox: Manual gearbox on Tdi, Td5 and 2.8i models; 6-speed manual (2.4 and 2.2 Puma). Send the VIN and engine number with your enquiry so the parts team can confirm the correct master cylinder before quoting.
Know the part
Understanding Defender (Classic) Master Cylinder
The brake master cylinder converts pedal pressure into hydraulic pressure. It sits at the front of the brake servo with the fluid reservoir on top, and it feeds two separate circuits so the vehicle can still stop if one circuit fails.
Master cylinder seals wear internally, allowing fluid to bypass the pistons. The classic sign is a pedal that slowly sinks while you hold steady pressure at a traffic light.
Further reading
- Master cylinder – Wikipedia
How a brake master cylinder creates hydraulic pressure.
Common Questions About Defender (Classic) master cylinder
How do I know if it is the master cylinder or air in the brakes?
Air in the system usually gives a spongy pedal that firms up when pumped. A failing master cylinder tends to give a pedal that sinks slowly under steady pressure. Check for external leaks first, then have the system tested.
Should I replace the reservoir with the master cylinder?
Reuse the reservoir if it is clean, uncracked and its seals are good. Fit new reservoir grommets, since old ones often leak once disturbed.
Does a new master cylinder need bench bleeding?
Yes. Bench bleeding it before fitting reduces the air that enters the system. Then bleed all four wheels, and use a diagnostic tool for the ABS unit if your model requires it.
What details do I need to order a master cylinder?
Send the VIN, model and year, and state whether the vehicle is left- or right-hand drive and manual or automatic. Classic Defender master cylinders changed across production years.
Other Defender (Classic) brakes
Not sure which part fits?
Share your VIN or engine code and the parts team will check the correct part for your Defender (Classic).