78-88 Disc Brake Proportioning Combo Brass Cast Iron Valve Plastic Lead Switch

71-77 Disc Brake Proportioning Combination Block Valve Switch Brass Cast SS RS

Brake Proportioning Valve-Prop. Valve For Front Disc Conversion

71-77 Disc Brake Proportioning Combination Block Valve Switch Brass Cast Lead

Fit For CHEVY Disc/Disc Brake Brass Proportioning Valve PV4

78-88 Disc Drum Brake Prop Proportioning Combo Brass Cast Iron Valve Conversion

1971-77 Disc Drum Brake Conversion Prop Proportioning Brass Combo Valve PV-2

1957-1977 Ford F-100 F150 pickup Truck Disc / Drum Brake Proportioning Valve Kit