This fuel line delivers diesel from the tank or lift pump to the injection system on the host tractor. It is a formed, rigid or semi-rigid tube that maintains a consistent internal diameter to prevent flow restriction and air ingress. A cracked or softened line allows air to enter the fuel stream, causing hard starting, erratic idle, or loss of power. As an original-manufacturer component, the tube is pre-formed to match the routing clips and clearance points of the original assembly, which eliminates the need for field bending or splicing. When replacing, ensure the sealing washers or O-rings at each connection are renewed and the banjo bolts are torqued to specification.