Fitment: For W639 109 111 Stable Fuel Return Flow Control: This fuel return hose supports smooth fuel circulation between connected system components during engine operation. The fuel leak off pipe helps maintain a steady return path while reducing unnecessary fuel buildup in the line area Vehicle Specific Fitment Routing: Designed to match the required connection layout and hose path for a clean installation within the engine bay. This specific fit fuel return pipe aligns securely with designated mounting points, allowing the diesel leak off hose to sit naturally without twisting or excess tension during use Durable Construction For Engine Heat: Built from wear resistant material suited for continuous exposure to heat, oil vapour, and regular engine movement. This replacement fuel leak off hose maintains flexibility under daily operating temperatures while helping reduce surface hardening or cracking over time in demanding driving conditions Reliable Connection During Replacement: Designed for secure attachment during servicing or part replacement with a practical shape that fits neatly into the fuel system layout. The automotive fuel return hose supports dependable fuel transfer while making installation easier during maintenance, inspection, or engine component repair work, Manufacturer: Mthxzy Store