The Standard Ignition PVS82 SI Ported Vacuum Switch is engineered to meet or exceed original equipment specifications ensuring optimal performance and longevity in your vehicle s engine system Designed for a 3 16 4 8 mm hose size with a 1 2 14 NPT thread this switch facilitates precise control of the engine s vacuum system thereby enhancing engine efficiency and responsiveness Constructed from high quality brass and high temperature plastic materials the PVS82 SI offers durability and resistance to the harsh conditions within the engine compartment Its direct fit design ensures straightforward installation minimizing downtime and labor costs This ported vacuum switch is compatible with various Chevrolet and GMC models including the 1980 1989 Chevrolet G10 1982 Chevrolet C10 and 1987 1989 Chevrolet V3500 By choosing the Standard Ignition PVS82 SI Ported Vacuum Switch fleet operators can enhance engine performance reduce maintenance intervals and ensure compliance with emission standards thereby optimizing operational costs and vehicle uptime