Collection: Bungs

Create clean, leak-free threaded sensor mount connections and fluid drainage access points on your custom fabrications, eliminate dangerous thread stripping and exhaust gas leak loops caused by brittle metal pairings or warped thin-wall ports during intense high-heat welding cycles, and guarantee a structural seal on every plumbing system with our professional-grade selection in the Bungs collection. At DIY Customs, we provide a premium lineup of raw fabrication components, including stepped oxygen sensor bungs, heavy-duty NPT threaded weld bungs, female AN plumbing inserts, and knurled fluid tank filler caps engineered to deliver a seamless and perfect fit on your custom plumbing. Whether you are packaging a high-temp, corrosion-resistant exhaust layout to route plumbing safely near advanced electronic control modules and wideband sensors on a forced-induction race build, outfitting your custom shop garage workspace configuration with a bulk assortment of steel and aluminum fittings to construct specialized industrial machinery and fleet utility fluid storage tanks, or welding an auxiliary fuel cell fitting onto an off-road overland vehicle, our industrial-grade fabrication hardware ensures maximum thread integrity metrics and pressure containment safety parameters. From stepped coped bungs designed for tubing curves to flush-mount hex-head plumbing provisions configured for popular automotive and industrial project frameworks, we carry the ultimate raw material preservation essentials—and if you don't see your specific thread pitch dimensions, exact material grade index, or specialized manufacturer fabrication fittings, you can hit the live chat or call 412-882-8346 for direct special ordering and drop-shipping straight to your doorstep!