EVIL ENERGY 12AN Male Weld-On Bung Fittings 4-Pack — 6061-T6 Aluminum, 37° AN Flare Seal, High-Pressure Rated

EVIL ENERGY 12AN male weld-on bung fittings are aluminum AN flare adapters designed to be welded into tanks or lines for secure 12AN connections, supplied as a set of four.

These 12AN weld bungs from EVIL ENERGY are machined from 6061-T6 aluminum and use the standard 37° AN flare seal to join hoses, lines, or accessories to welded tanks, fuel cells, and custom plumbing. They provide an OEM-style threaded connection rated for demanding automotive and racing environments, and come as a pack of four for multiple installations or spares.

What makes these 12AN weld bungs suitable for fuel and fluid systems?

The fittings are crafted from aircraft-grade 6061-T6 aluminum for a strong, lightweight connection that resists corrosion. The AN thread flares to a precise 37° seat, creating a metal-to-metal seal when mated with compatible AN fittings, and the parts are engineered to handle high pressures typical of automotive systems.

• Material: 6061-T6 aluminum alloy for strength and low weight
• Sealing: 37° AN flare for metal-to-metal sealing
• Pressure rating: up to 1000 PSI (68.94 bar)
• Temperature range: -65°F to 252°F for broad application use

How do I install these weld-on bungs correctly?

These bungs are designed to be welded into a tank or tube wall; prepare a flush, clean surface and tack-weld in place to avoid warping. Do not over-tighten the mating AN fitting—excess torque can deform the 37° seat and cause leaks—tighten to a proper hand-plus wrench fit or follow manufacturer torque recommendations.

• Surface prep: clean and deburr mounting hole before welding
• Welding: tack-weld first, then finish weld to avoid distortion
• Assembly: hand-start threads, then tighten to recommended snug level
• Warning: avoid over-torquing to preserve the 37° sealing face

Will these bungs work with my existing AN lines and fittings?

Yes—these 12AN male weld bungs follow the AN 12 thread and 37° flare profile, so they are compatible with any female 12AN fittings and hoses built to the AN standard. Confirm your hose or adapter specifies 12AN (AN-12) and uses a 37° flare seat; mismatched fittings can cause leaks or damage.

• Compatibility: fits standard 12AN female AN fittings
• Check fitment: confirm 37° flare specification on mating parts
• Application: suitable for fuel, oil, coolant (verify fluid compatibility)

How rugged are these fittings under pressure and temperature?

EVIL ENERGY weld bungs are rated to a maximum of 1000 PSI (68.94 bar) and cover a wide operating temperature span from -65°F to 252°F, making them robust for many automotive and motorsport scenarios. Their aluminum construction balances strength with corrosion resistance; however, always match pressure and temperature ratings to your specific system and fluids.

• Max pressure: 1000 PSI (68.94 bar)
• Operating temperature: -65°F to 252°F
• Construction: corrosion-resistant aluminum alloy

Who is this for? These EVIL ENERGY 12AN male weld-on bung fittings are intended for mechanics, fabricators, and DIY racers building or repairing fuel cells, oil catch tanks, or custom plumbing where secure AN connections are needed. Choose this 4-piece pack if you need multiple ports, backups for race service, or uniform fittings across a custom installation.