Parts-Wise
battery
90161102200
911 (69-73) Battery restraining strap, upper part which goes over the top of the battery.
90161102521
356 BT6/C, 911 (65-68) Hold down strap for battery (on 356 with 6 volt battery the strap needs to be shortened to function properly)
90161102800
911 (69-73), 912 (69) Battery restraining strap, lower part which tightens the battery in place.