A4710706235
Low-Pressure Needle Return Line (Coach)
Detroit Diesel

This low-pressure needle return line, rated for 140 bar, is engineered to efficiently return excess fuel or vapors from the engine's high-pressure side back to the tank. Its robust construction ensures resistance to high-pressure stresses and chemical corrosion, which are common in diesel fuel systems. The line’s specific dimensions facilitate precise routing and connection to other fuel system components, ensuring leak-proof operation. Its role is critical in maintaining system pressure balance, preventing over-pressurization that could lead to component failure or safety hazards. Proper installation and maintenance of this line help sustain optimal engine performance and fuel efficiency. Source One Parts Center recommends this component for reliable, high-pressure return applications in heavy-duty diesel engines.