1 inch trailer hydraulic master cylinder

Hydraulic master cylinder with 1 inch bore size for use on trailers and caravans with hydraulic override brake systems.

HU4 union and CW1 copper washer are required for installation of all master cylinders.

Flush out old brake fluid from the brake lines and brakes before connecting this new master cylinder. Then connect brake lines, refresh the system with new brake fluid and bleed air from the brake system. DOT 4 brake fluid is recommended. 

New master cylinder mounting bolts with nuts are also available.

 Ref: AB298