This is brand new part for all late Bus owners. This is
a brake survo booster for bay window cars 1971-1974 through
chassis number 214211465. Booster pressure should be no more
than 14 PSI on idle engine and 8.5-11 PSI when brake has applied
on the pedal anything more than this will damage the unit and will
not be covered under the warranty. Come with one year warranty
works great, why get a rebuilt one when you can get new one
today without any core, get one today, New~