This F-connector is located on the air intake boot and provides a connection point for the vacuum lines that run to the brake booster and fuel pressure regulator. As your vehicle ages, heat and exposure to the elements cause the connector to become brittle and potentially crack. As a result, a vacuum leak occurs which can cause poor idling issues, evap fault codes, and poor performance.
This aluminum version from ECS Tuning is impervious to these issues, and will easy outlast the rest of your plastic and rubber vacuum system components.
