We will re-build your unit. XK150, Mk II sedan + others, sometimes found on 3.8 + 3.4 Jaguar Sedans.
You must send in your unit for us to re-build
This booster is easy to recognize as it has an auxiliary 5" hexagonal vacuum diaphragm assembly attached to the servo.
This booster works very well with dunlop disc or drum brakes, some aftermarket boosters tend to over-boost.
*Please specify disc or drum brake cars as valving is specific to application.