Product Description: 1955-57 Chevrolet Treadle-Vac Replacement Booster/Master Cylinder Combo
Measurements:
- Right hand: 5/18" slot
- Left hand: 1" slot
- Horizontal holes: 3-7/8" apart center to center
- Vertical holes: 4-1/4" apart center to center hole
For more information, follow the link: 1955-57 Chevrolet Treadle-Vac Replacement Booster/Master Cylinder Combo