Product Details: Ensure your semi is Ready for the Road Ahead™ with an efficient emergency brake system, with the Haldex Type 3030 Gold Seal Standard Stroke Spring Brake Chamber. To add an extra level of security, this replacement component works to release the parking brakes once there has been a case of air pressure loss. Fashioned with an advanced powder-coated design to cage the emergency brakes until they are needed. FleetPride is your First Click in Heavy Duty®.