New OEM genuine Nissan front and rear sway bar bushing washers. Two different styles, Nissan calls inner and outer. The inner (1018) washer has a lip on it to engage the sway bar or lower control arm. The outer (1017) washer is for contact with the rubber bushing, far end of the sway bar bolt. These will fit Datsun 240Z, 260Z, 280z and 510, 1968-78. The 1017 is a silver zinc color and the 1018 is yellow zinc.