1987-1991 GMC V3500 7.4L V8. 1987-1991 GMC V3500 6.2L V8. 1987-1991 GMC V3500 5.7L V8. 1987-1988 GMC V3500 4.8L 6 Cyl. New Brake Master Cylinder. Master Cylinder Material: Cast Iron. 100% New EPDM Seals and O-Rings maintain consistent brake pressures for safe stopping power.
