1967-1970 Dodge Polara 7.2L V8. 1967-1970 Dodge Polara 6.3L V8. 1967-1970 Dodge Polara 5.2L V8. 1967-1970 Dodge Polara 3.7L 6 Cyl. Master Cylinder Material: Cast Iron. New Brake Master Cylinder. 100% New EPDM Seals and O-Rings maintain consistent brake pressures for safe stopping power.