4994932 XCMG GR2605 motor grader fuel return pipe

4994932 is an original equipment manufacturer (OEM) fuel drain tube for Cummins engines. As a critical component in the low-pressure return fuel system, it features a high-strength cold-formed steel structure with standard connectors at both ends. It reliably returns fuel injector return flow and excess fuel from the fuel system back to the fuel tank, balancing line pressure, recovering clean fuel, and protecting the high-pressure common rail system from excessive pressure. It is a key pipeline ensuring the safe and stable operation of the fuel system.

Part Number: 4994932 (often marked as C4994932)
Product Type: Fuel Drain Tube / Fuel Return Tube
Material: High-strength seamless steel pipe with anti-corrosion coating
Connection Type: Threaded connector / quick-connect connector (low-pressure seal)
Compatible Pressure: Low-pressure return (typically ≤0.5MPa, subject to system design)
Superseded Part Numbers: 5341880, 3978505, 4943938 (public replacement records)
Weight: Approx. 0.18-0.22kg per piece (subject to actual)

Applicable Engines: Cummins QSB3.9/4.5/5.9/6.7, QSB7, ISB/ISD4.5/6.7 series electronic controlled high-pressure common rail engines

Equipment: Commercial vehicles (Dongfeng Tianlong, Tianjin, Foton Auman, etc.), construction machinery (Komatsu, Sany, XCMG excavators/loaders/motor graders), forklifts, Cummins series industrial generator sets

Installation Location: Between the fuel injector return collection end and the fuel tank return port, serving as the low-pressure return passage of the fuel system