This Polished 4-Port Aluminum Diamond A/C & Heater Bulkhead is an attractive option for routing Heater and A/C hoses through your firewall. Three of the ports accommodate #10 O-ring fittings and the fourth port is designed to accept a #6 O-ring fitting. Two of the #10 ports will be used for heater lines and the remaining #6 and #10 ports will be used for refrigerant lines.

To install this bulkhead on your car, simply disassemble the bulkhead, determine optimal placement, trace hole locations onto your firewall, drill holes and reassemble onto your firewall. Each individual bulkhead fitting is keyed into the bulkhead plate to prevent the fitting from turning as you install the hose ends.