Fuel cap clip. GAS ENGINE. A Clip which helps secure the Drive Motor Battery Pack Charging Port Cover to it's mounting point. A securing fastener which pushes in or snaps into place to secure the Fuel Tank Filler Cap. Fuel Tank Cap Tether Clip. Fuel Tank Cap Tether. retainer. Tether. Drive Motor Battery Pack Charging Port Cover. Strap. Included with: Fuel Cap.