This master cylinder has 4 ports and is the Bail Top Style & has a 1" Bore(9/16" & 1/2" Ports on each side).
Zinc 7"" Dual DiaphragmPower Brake Booster and a new Cast Iron Dual Bail Top Master Cylinderfor universal applications.
Replace Part Number: RSRB03123
Package Include: 1 Set 7" Dual Power Brake Booster Kit
Note: Please check the appearance and part number of the product before placing the order to confirm that it is suitable for your car, thank you;Warranty for 24 Months.