MK667120
Fuel Return Line Bolt
Mitsubishi FUSO®

The Fuel Return Line Bolt, also known as part number MK667120, is a small but crucial component in the fuel system of a truck. This bolt is typically made of high-strength steel and is designed to secure the fuel return line to the engine block or fuel rail. The fuel return line is responsible for carrying excess fuel back to the fuel tank, preventing it from overheating or causing damage to other engine components. The Fuel Return Line Bolt ensures that the fuel return line remains securely fastened in place, preventing leaks and ensuring proper fuel flow. Without this bolt, the fuel return line could become dislodged or disconnected, leading to a loss of power and potential damage to the engine.