M50-6039-4413900
Heated DEF Return and Supply Hose Assembly (4 x 3900mm)
Kenworth®

The Heated DEF Return and Supply Hose Assembly is essential for ensuring the proper transfer of diesel exhaust fluid in your Kenworth truck's aftertreatment system. Crafted for durability and high-temperature resistance, this assembly maintains reliable DEF flow, preventing freezing and ensuring compliance with emission regulations. The kit includes four hoses, each measuring 3900mm, designed to fit specific truck configurations. These hoses are built to withstand harsh chemical exposure and extreme conditions, providing a long-lasting and dependable solution. Proper installation of this genuine OEM part helps optimize your vehicle's emission system performance and reduces downtime. When you choose parts from Source One Parts Center, you get authentic Kenworth components that meet OEM standards, ensuring your truck remains in peak condition. Our expert team is dedicated to helping you find the right parts for your needs, making us the best source for genuine Kenworth truck parts.