燃油箱排放塞 fuel tank drain plug

齿轮箱排放塞 gear drain plug

气箱排放塞 air tank drain cock

变速箱油箱排放塞 transmission tank drain plug

曲轴箱机油排放螺塞 crankcase oil drain plug

箱排放阀螺塞 tank drain valve plug

变速箱排放螺塞 transmission drain plug

变速箱机油排放螺塞 transmission oil drain plug