M50-6039-4414250
Heated DEF Return and Supply Hose Assembly (4 x 4250mm)
Kenworth®

The Heated DEF Return and Supply Hose Assembly is a key component for ensuring the efficiency of your Kenworth truck's aftertreatment system. Engineered with high-quality, heat-resistant materials, this hose facilitates the safe transfer of Diesel Exhaust Fluid (DEF) between the tank and emission control units. Its precise dimensions and rugged construction provide a leak-proof, durable connection that withstands harsh operating conditions. Using genuine OEM parts like this hose assembly helps maintain emission standards, reduces maintenance costs, and prolongs system life. Whether for routine replacement or repair, sourcing authentic parts from Source One Parts Center guarantees quality, compatibility, and peace of mind. We are dedicated to providing the best Kenworth truck parts to keep your vehicle performing reliably and efficiently.