Product Details: The Haldex 3" Stroke Length Service Chamber Brake is the perfect choice for any vehicle requiring superior braking performance. This brake features a superior rubber composition that is tolerant to both heat and cold, an exceptional diaphragm and superior flexibility even at -40 °F. The air ports are resistance welded and powder coated for superior durability and easy installation. The stud spacing is 4.75" for a secure fit. With its superior performance and easy installation, it is the perfect choice for any vehicle. FleetPride is your First Click in Heavy Duty®.