Thermostat neck removal coolant block-off plate for head

Seal the opening in the cylinder head left behind when removing the thermostat neck during a coolant reroute install on a 1990-05 Miata. Does a great job of cleaning up the engine bay and requires no fiddling around with freeze plugs. This is the same plate included with our reroute kits, now available separately. Includes the O-ring. Toy car not included.