This spring provides the return force that holds the right fender in its raised or neutral position on the host tractor. It connects between the fender bracket and the chassis, counteracting the weight of the fender during tilt or lift operations. A sagging or broken spring allows the fender to droop, which can cause the fender to contact the tire or restrict operator access to the cab step. The manufacturer machines the spring to the original free length and coil rate, so the fender maintains its designed range of motion without requiring shims or adjustment brackets.