Good used grommet that seals the heater hoses and A/C lines where they pass through the firewall on the passenger side. Made from a spongy rubber, attaches to the heater core and seals the firewall from the inside. This grommet does not use a retaining bracket like previous years. Will be intact, but will show some degradation as shown in the picture, most evident where the heater core tubes pass through.
Engineering # D1ZZ-19B588-A.