Heater line bulkhead. The bulkhead has # 10 7/8″-14 male threads on each side. The bulkhead is made of billet aluminum for a clean look on the firewall. The bulkhead can be used to run hoses through the firewall or through an inner fender well.
The bulkhead measures 3-3/8″ wide x 2″ tall.

Fittings are included by default, if you don’t need the fittings, the option below will allow you to remove them.