Fuel lines are critical components of a vehicle's fuel supply system, responsible for safely and reliably delivering fuel from the fuel tank to the engine. Located throughout the undercarriage and engine bay, these lines must withstand high pressure, resist corrosion, and maintain fuel integrity. Typically constructed from reinforced rubber or thermoplastic materials, fuel lines are engineered to prevent leaks and ensure consistent fuel delivery for optimal engine performance. This category includes lines for both passenger cars and commercial vehicles. Examples include MAN fuel lines with part numbers like 51.12307-5798 and 51123075797, as well as Scania lines such as 1741068. Proper fuel line maintenance and replacement are essential for vehicle safety and efficiency.