If you're diving into some serious custom fabrication, you’ll want to check out the HPS Aluminum AN-12 Weld Bungs. These bad boys are made from 6061 aluminum, which is not just any aluminum—it’s tough and lightweight, perfect for whatever you’re building. I’ve used these on a few projects, and I can tell you, they hold up well under pressure.
One of the standout features is the male 37-degree flare—this isn’t just a random angle. It’s designed for a snug fit with AN fittings, ensuring that you get a solid connection without any leaks. Plus, the back of the bung has this raised section that really helps keep everything aligned while you’re welding. Trust me, that little detail makes a big difference when you’re trying to get a clean weld.
These weld bungs come in a raw, uncoated finish, which means less prep work for you. You can jump straight into your project without worrying about stripping off any coatings. They’re versatile too; I’ve used them for everything from oil catch cans to fuel cells and even steam ports. They can handle water, coolant, air, oil, hydraulic fluid, and most fuels without breaking a sweat.
Here’s the nitty-gritty: they’re AN-12 size, which means they’re ideal for larger applications. Whether you’re fabricating an oil pan or setting up a custom reservoir, these bungs are a solid choice. If you’re serious about your builds, you’ll appreciate the quality and thought that went into these weld bungs.
In short, if you want reliable, high-quality weld bungs for your next project, the HPS Performance Weld-on AN flare bung is worth considering. They’ve got the specs you need and the durability you can count on.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

HPS Performance Products is a leading manufacturer of aftermarket performance parts, fabrication components, and silicone hoses. HPS serves a number of different industries, including automotive, aerospace, construction, commercial truck/bus, marine, agricultural, turbo diesel, off-road, performance racing, general manufacturing, and water treatment. The company’s ability to fabricate custom-shaped multiply silicone hoses make it ideal for a wide range of applications. The multiply carcass makes HPS’ hose perfect for coolant and turbocharged pressure applications while the fluoro-silicone-lined hoses make it safe to be used with petroleum-based oil and fuel.
HPS Performance Products is committed to meeting its original goals of producing quality parts at competitive pricing and providing customer service responses in a personal, timely manner. All HPS products have been thoroughly tested on the dyno and track, and meet or exceed SAEJ20 standards. The HPS staff has solid expertise in the silicone hose department, which allows them to deliver standard size silicone hoses with same-day shipping. HPS’ highly skilled and knowledgeable team, paired with the latest state-of-the-art technology, ensures the brand’s continued success and reputation as a premier manufacturer in the industry
HPS Quality Silicone HosesHPS Performance Products specializes in and is best known for manufacturing multi-application silicone hoses. HPS silicone hoses are carefully crafted from only the highest quality 4-ply reinforced high-temperature material. The hoses are available in the following varieties: straight coupler, 1-foot tube, 3-foot coolant tube, charge air cooler hose (CAC), hump coupler, reducer couple her, 45-degree elbow coupler and reducer, and 90-degree elbow coupler and reducer.
HPS Performance Products also carries performance silicone vacuum hoses and silicone heater hoses. You can choose silicone hoses in both standard inch and hard-to-find metric sizes. Stainless steel T-bolt clamps are available to match with the silicone hoses as well. In order to meet the high demand and shorten the turnaround time for its silicone hoses, up to 90 percent of the product is already in stock and ready to ship or pick up from HPS authorized dealers like Vivid Racing.
HPS Performance Products at Vivid RacingVivid Racing carries a comprehensive lineup of HPS Performance Products for a number of different makes, models, and applications. Our extensive inventory of HPS parts includes aluminum tubing, cold air and short ram intakes, vacuum lines, hoses and clamps, intercooler pipes, radiator caps, and much more! If you have any questions regarding the items listed above or have fitment concerns, please contact our expert sales team at (480) 966-3040. We are here to help you through the entire purchase process and make it a pleasant experience.