Bosch 68014080AA Fuel Injector Return Line O-Ring Seal

The Bosch 68014080AA is a precision-engineered O-ring seal designed for the fuel injector return line fitting on Mercedes-Benz diesel engines. This small but critical seal ensures a proper, leak-free connection between the fuel injector and the return fuel line system, preventing fuel seepage that can lead to the notorious "black death" carbon buildup commonly experienced with these engines.

Key Features:

• Genuine Bosch OEM quality construction for reliable performance
• Precision-molded O-ring design for optimal sealing
• Designed specifically for common-rail diesel fuel injection systems
• Prevents fuel leaks and carbon accumulation around injectors
• Direct replacement for Mercedes-Benz part number 0000780580
• Sold individually - one seal required per injector

This seal is essential during fuel injector replacement or maintenance to ensure proper sealing and prevent costly engine damage. Mercedes diesel engines are particularly susceptible to injector seal deterioration, which can cause fuel to leak and form a hard, tar-like substance around the injector body. Replacing these seals as part of regular maintenance or during injector service is critical for maintaining engine performance and preventing more extensive repairs.

Cross Reference Numbers: 0000780580, A0000780580, 000 078 05 80, F 00V P01 003