Features & Benefits: Item Type: Vacuum Power Brake Booster Condition: Brand New Quantity Sold: One Piece Brake Booster Diaphragm Style: Single Diaphragm Diameter (IN): 8.5 Diaphragm Diameter (MM): 215.9 Master Cylinder Included: No Master Cylinder Stud Thread Size: M8 x 1.25 Note: without Master Cylinder Part Numbers: 53-5412, 46400SH3931, 46400SH3932, 46400SH3A01, 46400SH3A02, 46400SR3003 For the Following Cars: .