Aluminum A/C bulkhead fitting designed for use on firewalls, inner fenders, or core supports, providing a clean pass-through point for A/C hoses or hard lines. Made in the USA and supplied with a steel lock nut, each bulkhead accepts the matching size O-ring hose end or a female hardline fitting on both sides. Available in #6, #8, and #10 sizes to suit a variety of custom A/C system layouts.