Collection: Auto - Flare Plug

Ensure a rock-solid, leak-proof seal for your high-pressure fluid lines with our selection of Auto Flare Plug components. At DIY Customs, we provide high-quality brass flare plugs, durable stainless steel block-off fittings, precision-engineered aluminum AN plugs, and heavy-duty inverted flare hardware designed for a perfect fit. Whether you are capping off a secondary fuel line, sealing an unused brake port during a master cylinder swap, or plugging transmission cooler lines for maintenance, our professional-grade hardware offers the mechanical precision and vibration resistance you need at unbeatable prices. From specialized JIC plugs to standard automotive flare sizes, we carry the essential gear for custom plumbing projects. Don't see the specific thread pitch or specialized high-pressure plug for your build? Hit the live chat or call 412-882-8346—we can special order and drop-ship exactly what you are looking for directly to your doorstep!