The "Smog Era" engine bay is a maze of vacuum lines and switches. When one small valve fails, the whole system goes down. This category contains the hard-to-find Control Valves and Sensors needed to make your vintage emissions system function correctly.
Inventory Includes:
Thermal Vacuum Switches (TVS): The multi-port switches screwed into the water neck that control vacuum advance based on engine temp.
Check Valves: One-way valves for air injection and brake boosters.
Vacuum Amplifiers: Complex diaphragms used on 1970s Mopars and Fords.
Air Pump Parts: Diverter valves and crossover tubes for smog pumps.
