VACUUM BRAKE BOOSTER KITS EV BRAKE BOOSTER SYSTEM Components Included - Vacuum Pump - Sensor Switch , - Tee Fitting , - Vacuum Hose - Hose Clamps - Air Canister . Application about our EV Vacuum Power Brake - Electric Vehicle - Electric Trucks, - Electric Tour Bus, - Beach ATV , - Electric Pushback Tractor , - Electric Baggage Tractor - Hybrids Vehicle - EV conversion kits