OE Number: 54-71098, 5471098, 18021896, 18029985, 18029986 Description: Item Type: Vacuum Power Brake Booster Quantity Sold: One Piece Brake Booster Diaphragm Style: Dual Diaphragm Diameter (in): 10.83 in. Master Cylinder Stud Thread Size: M10 × 1.25 Master Cylinder Included: No Brake Booster Diaphragm Style: Dual Engine: L6 4.1L, V6 4.3L, V8 5.0L, V8 5.7L, V8 6.5L, V8 7.4L Material: Steel Package Quantity: 1 Note: without Master Cylinder Fitment: .