The fifteen Lt300e Quad Runner 1988 (j) Usa (e03) Quadrunner Quad-runner Suspension Arm component parts are all listed in this schematic.
A sample from the products for the Suspension Arm include: Absorber Assembly,front Shock, Bush(10.2x25.5x52.2), Arm Comp,suspension,lower, Arm,suspension.
On this parts fiche the Bush(10.2x25.5x52.2) is the most specified component.