Update your semi with enhanced brake safety, with the Haldex 2430 Standard Stroke Spring Brake Chamber that ensures you're Ready for the Road Ahead. Due to its pressurized inner chamber, this replacement component is able to apply the spring brakes as a safety measure once the internal air pressure drops below a certain level. Constructed with a rugged metal body to efficiently contain pressure and the energized spring brakes. FleetPride is your First Click in Heavy Duty.