EV VACUUM POWER BRAKE Application of this Vacuum Brake Booster System - Electric Vehicle - Electric Trucks, - Electric Tour Bus, - Beach ATV , - Electric Pushback Tractor , - Electric Baggage Tractor - Hybrids Vehicle - EV conversion kits Components Included of Electric Vacuum Pump Kit - Vacuum Pump - Sensor Switch , - Tee Fitting , - Vacuum Hose - Hose Clamps - Air Canister .