M50-6039-4414500
Heated DEF Return and Supply Hose Assembly (4 x 4500mm)
Kenworth®

The Heated DEF Return and Supply Hose Assembly is a critical component of your Kenworth truck’s emission control system, designed to transport Diesel Exhaust Fluid (DEF) with integrated heating elements to prevent freezing and ensure proper flow. This assembly features four 4500mm hoses constructed from high-quality, heat-resistant materials capable of withstanding the demanding conditions of heavy-duty operation. Properly functioning heated hoses are essential for maintaining DEF system efficiency, reducing downtime, and ensuring compliance with emissions standards. Installing genuine OEM parts like this hose assembly guarantees compatibility and durability. Source One Parts Center is your trusted partner for authentic Kenworth parts, offering top-tier products, competitive prices, and quick shipping to keep your DEF system operating reliably.