Get your semi Ready for the Road Ahead™ with enhanced brake safety, with the Haldex GoldSeal+ 3036 Standard Stroke Combo Spring Brake Chamber. With a pressurized internal chamber, this replacement component applies the spring brakes as a safety measure once the air pressure falls below a certain point. Manufactured with a solid metal body to efficiently contain pressure and the energized spring brakes. FleetPride is your First Click in Heavy Duty®.