Features: This combination/proportioning valve regulates the flow of fluid from rear to front, helping to maintain balanced brake pressure and providing system reliability. 3/8-24 ports for front left and right caliper and 9/16-18 port for the rear brakes, 1/2-20" & 7/16-18" ports in from the master cylinder. This is a universal valve designed to be compatible with various vehicles, though proper installation and potential port blocking may be required. Constructed from high-quality materials for durable and reliable performance. Part numbers: 25509419, 172-1350, 172-1353, 172-1363, 172-1364, 172-2174, 172-2187, 172-2215, CLP-PV-2. Please verify fitting sizes before purchase. Color: gold Fit for the following models: Buick Apollo 1973-1975 Buick Centurion 1971-1973 Buick Century 1954-1977 Buick Electra 1959-1975 Buick Estate Wagon 1959-1978 Buick Gran Sport 1965-1967 Buick GS 1970-1972 Buick GS 350 1968-1969 Buick GS 400 1968-1969 Buick GS 455 1970-1972 Buick Limited 1958 Buick Roadmaster 1950-1958 Buick Skylark 1958-1972 Buick Sportwagon 1964-1972 Buick Standard Six 1928 Buick Super 1950-1958 Chevrolet Bel Air 1950-1970 Chevrolet Biscayne 1958-1971 Chevrolet Brookwood 1958-1972 Chevrolet C10 1975-1986 Chevrolet C10 Panel 1960-1966 Chevrolet C10 Pickup 1960-1974 Chevrolet Camaro 1967-1980 Chevrolet Chevelle 1964-1973 Chevrolet El Camino 1964-1980 Chevrolet Impala 1958-1980 Chevrolet Malibu 1964-1983 Chevrolet Monte Carlo 1970-1980 Chevrolet Styleline Deluxe 1950-1952 Chevrolet Vega 1971-1977 Ford Bronco 1966-1985 GMC C25 1975 Pontiac Bonneville 1957-1980 Pontiac Catalina 1955-1980 Pontiac Chieftain 1955-1958 Package includes: 1 Proportional valve