This brand-new truck expansion part covers OEM numbers 7420783901, 5010263004, 1404524 and 1700772, fitting LF45 and LF55 trucks perfectly. It works to compensate for thermal expansion and contraction while relieving mechanical stress. Made of wear and corrosion resistant materials, it adapts well to complex driving environments. Manufactured strictly to OEM specifications, it is easy to mount and ideal for replacing aged or damaged parts.