This is a genuine OEM Bendix Dash Parking Supply Air Brake Valve, part number 5018303, removed from a 2018–2024 Freightliner Cascadia. It is a used but fully functional component, ideal for restoring proper air brake system performance. Built to OEM standards for reliability and safety, this valve is a direct-fit replacement for Cascadia models, ensuring seamless integration and dependable operation. A practical, cost-effective solution for maintaining your commercial truck's braking system.