NOS box is old but appears to be unused. Originally purchased in 1990 been in store room since.

The GM 3041017 Therm vacuum 3 port switch is a Delco product designed for 1980-1985 2.8L engines. This ported vacuum switch is a crucial component for controlling emissions and ensuring optimal engine performance. Perfect for those needing a replacement switch, this product is a reliable choice for maintaining the functionality of your vehicle's exhaust and emission systems.

Loc C6