Get your semi truck Ready for the Road Ahead™ with reliable vacuum pressure, with the National Vacuum Equipment 607/866 Challenger Vacuum Pump Repair Kit. This compact pump uses a collection of sealed chambers to create an air vacuum that can be used to power brakes, reduce nitrogen emissions, and support HVAC systems. Engineered with a solid and durable body to endure everyday use. FleetPride is your First Click in Heavy Duty®.