Contents: Ported Vacuum Switch. Notes: Ported Vacuum Switch -- Gray; 4 Ports. 1986-1990 Chevrolet P30 7.4L V8. 1983-1988 Chevrolet P30 5.7L V8. 1984-1985 Chevrolet P30 7.4L V8. Carefully constructed with brass and high temperature plastic housing to OEM specification for precision fit and performance.
