Original parts from a 66 Chevelle definitely needs rubber seal where master cylinder meets booster old one was deteriorating and was taken off

Comes with DELCO master cylinder GM #

5464866  DATED B-12-6and has a #1 stamped on MC I believe it is a 1" bore

1964-66 POWER BRAKE BOOSTER HAS A

PLASTIC BOOT WITH GM # 2502826 AND BRACKETS FOR 1966 CHEVELLE and push rod end

MIGHT BE SHIPPPED PARCIALLY DISASSEMBLED AND PACKAGED CAREFULLY

PLEASE LOOK AT PHOTOS WELL AS THEY ARE A PART OF THE DESCRIPTION AND PLEASE DO YOUR OWN RESEARCH TO CONFIRM FITMENT FOR YOUR APPLICATION

SOLD AS A PARTS LOT AS IS NO RETURNS

THANKS FOR LOOKING