Set 2x gaskets heater hose for Porsche 911 F G SC '69-'89 rubber gasket

These rubber grommets are used in the bulkhead and serve as a feed-through for the heater hoses.
They seal the passenger compartment against gases and vapors from the engine compartment.
If available, these rubber parts are always replaced during a restoration, as they become brittle and leaky over the years. Hardened rubbers can no longer be fitted without tearing.