10 Best Aluminum AN Fittings: Upgrade Your Ride

What are the best aluminum AN fittings for upgrading your car’s performance?
Our guide shares real user experiences to help you choose durable and easy-to-use fittings for a smoother upgrade project.

Upgrading your car’s performance can be exciting! Finding the right fittings is key to success. This guide will help you choose the best aluminum AN fittings for your needs.

Aluminum AN fittings are strong and reliable. They are great for many car systems. Users love them for their durability and ease of use.

I’m here to make your upgrade project easier. Let’s dive in and find the perfect fittings for your ride!

List of Top 10 Aluminum AN Fittings

Image Title Best For Price
EVIL ENERGY 12AN Male Weld on Bung Fitting Aluminum 2PCS EVIL ENERGY 12AN Male Weld on Bung Fitting Aluminum 2PCS

This EVIL ENERGY 12AN weld bung is perfect for car builders and racing fans who want strong, reliable fittings for custom fuel lines or tanks. It’s ideal for any DIY mechanic upgrading a vehicle with high-pressure needs without hassle.

CNRAQR 10AN Male Weld on Bung Fitting Aluminum Hex Head Fitting 4PCS CNRAQR 10AN Male Weld on Bung Fitting Aluminum Hex Head Fitting 4PCS

Are you building or modifying a fuel system? The CNRAQR 10AN Male Weld on Bung Fitting is perfect for you. It’s great for anyone working with fuel, water, or air lines.

EVIL ENERGY 6AN Female Hardline Tube Nut & Sleeve Aluminum Fitting for 3/8 EVIL ENERGY 6AN Female Hardline Tube Nut & Sleeve Aluminum Fitting for 3/8″ OD Alloy Tubing 2PCS

This kit is for DIY car fans and pro mechanics who work on engines and fuel, brake, or cooling lines. It features 6AN fittings, an aluminum sleeve, and a 37° flare for strong, leak‑free joints.

EVIL ENERGY 6AN Male Flare to 1/2 EVIL ENERGY 6AN Male Flare to 1/2″ NPT Pipe Fitting Adapter Aluminum Straight Black 2PCS

Need to connect AN6 fittings to a 1/2″ NPT pipe? Then the EVIL ENERGY adapter is your answer! It’s perfect for anyone working on fuel, cooling, or power steering systems.

CNRAQR Aluminum 1/4 CNRAQR Aluminum 1/4″ NPT Female Weld on Bung Weldable Fitting 4PCS

Looking for the perfect weld-on bung for your project? If you work on fuel tanks, intercoolers, or intake manifolds, this is for you. These high-quality aluminum fittings are durable and easy to install.

EVIL ENERGY 6AN Male to 5/16 EVIL ENERGY 6AN Male to 5/16″ Hardline Compression Fitting Adapter Aluminum Black 2PCS

Are you looking to upgrade your fuel system? The EVIL ENERGY 6AN Male to 5/16″ Hardline Compression Fitting Adapter is perfect for fuel delivery and engine modification. If you’re using stainless steel or aluminum hardlines, this is a must-have!

CNRAQR Straight 6AN Male Flare to 3/8NPT Pipe Fitting Adapter Aluminum Black 2Pcs CNRAQR Straight 6AN Male Flare to 3/8NPT Pipe Fitting Adapter Aluminum Black 2Pcs

This product is perfect for car enthusiasts who build or upgrade fuel systems in their rides. It fits right into oil coolers and fuel lines for a leak-free setup that’s easy to install.

Podavelle 6AN Male Flare to 1/4 NPSM Transmission Cooler Adapter Fitting Aluminum Black Fits TH350 TH400 4L60E 700R4 200-4R TR6060 AOD 4R100 4R70W C5, Pack of 2 Podavelle 6AN Male Flare to 1/4 NPSM Transmission Cooler Adapter Fitting Aluminum Black Fits TH350 TH400 4L60E 700R4 200-4R TR6060 AOD 4R100 4R70W C5, Pack of 2

Are you upgrading your transmission cooler lines? These Podavelle fittings are perfect for you. They fit many common transmissions and make your install easy.

EVIL ENERGY 10AN Straight Push Lock Hose Fitting End Black EVIL ENERGY 10AN Straight Push Lock Hose Fitting End Black

This EVIL ENERGY fitting is perfect for anyone needing a reliable fuel line connection. It’s great for cars and trucks!

Shineyoo 6AN Straight End Fitting 4 Pcs for Braided Fuel Oil Gas Line Hose End 6 AN Fittings Aluminum Black Shineyoo 6AN Straight End Fitting 4 Pcs for Braided Fuel Oil Gas Line Hose End 6 AN Fittings Aluminum Black

This Shineyoo 6AN Straight End Fitting is perfect for car or truck lovers. It’s great for anyone who wants to upgrade their fuel, oil, or gas lines.

Detailed Reviews

Discover the best aluminum AN fittings with our expert guide. We’ve analyzed top products, considering performance and value. Get ready to upgrade your setup with confidence!

1. EVIL ENERGY 12AN Male Weld on Bung Fitting Aluminum 2PCS

EVIL ENERGY 12AN Male Weld on Bung Fitting Aluminum 2PCS

Upgrade your setup with the EVIL ENERGY 12AN Male Weld on Bung Fitting Aluminum 2PCS. This fitting features a thread size of 1 1/16-12 UNF and is built from strong aluminum alloy 6061-T6.

Handle high pressure up to 1000 PSI. It works in temperatures from -65°F to 252°F. The 37-degree angle seal locks in tight.

Pick these for reliable performance. Just tighten gently to avoid leaks.

Pros Cons
  • Durable aluminum alloy construction.
  • Seals with a reliable 37-degree angle.
  • Handles high pressure up to 1000PSI.
  • Works in a wide temperature range.
  • Deforms easily if tightened too much, risking leaks.
  • Aluminum alloy may wear out faster than steel in rough use.
  • Limited temperature range stops it from working in very hot or cold spots.

Perfect For:

This EVIL ENERGY 12AN weld bung is perfect for car builders and racing fans who want strong, reliable fittings for custom fuel lines or tanks. It’s ideal for any DIY mechanic upgrading a vehicle with high-pressure needs without hassle.

Ready to Purchase?

2. CNRAQR 10AN Male Weld on Bung Fitting Aluminum Hex Head Fitting 4PCS

CNRAQR 10AN Male Weld on Bung Fitting Aluminum Hex Head Fitting 4PCS

Upgrade your ride with the CNRAQR 10AN Male Weld on Bung Fitting. This aluminum fitting works great for diesel, E85, water, air lines, and fuel tanks.
It takes high pressure at up to 1000 psi. The thread size is 7/8-14 UNF. We offer a two-month return and fast help for issues.

Pros Cons
  • Lightweight aluminum keeps it easy to use.
  • Anodized coating fights rust and corrosion.
  • High pressure of 1000 psi handles tough jobs.
  • Wide range of uses for diesel and fuel.
  • Strong threads ensure a secure, reliable fit.
  • You must weld it to attach.
  • May not last as long as steel parts.
  • Needs special tools to fit right.

Perfect For:

Are you building or modifying a fuel system? The CNRAQR 10AN Male Weld on Bung Fitting is perfect for you. It’s great for anyone working with fuel, water, or air lines.

Ready to Purchase?

3. EVIL ENERGY 6AN Female Hardline Tube Nut & Sleeve Aluminum Fitting for 3/8″ OD Alloy Tubing 2PCS

EVIL ENERGY 6AN Female Hardline Tube Nut & Sleeve Aluminum Fitting for 3/8

Upgrade your car’s power with the EVIL ENERGY 6AN Female Hardline Tube Nut & Sleeve Aluminum Fitting. This set includes two pieces for 3/8″ OD alloy tubing, perfect for tough engine jobs.

It uses strong aluminum alloy 6061-T6 that works from -65℉ to 252℉. The nut connects pipes to fittings, while the sleeve locks the tube in place with a tight seal. Get better performance in systems like fuel and brakes.

Install the nut and sleeve on the tube first. Then flare the end at 37° using a special tool. Ask a pro for the best results to avoid mistakes.

These fittings shine in car mods for engines, fuel, brakes, and cooling. They make systems leak-proof and strong. Grab yours now to boost your ride’s reliability and speed.

Pros Cons
  • Durable aluminum alloy handles extreme temperatures from cold to hot.
  • Secure seal with 37-degree flare stops leaks in high-pressure systems.
  • Easy setup for tubing with simple nut and sleeve installation.
  • Versatile use in car engines, fuel lines, brakes, and cooling.
  • Strong fit for 3/8-inch tubes in stainless steel or aluminum.
  • Requires professional installation for best results.
  • Aluminum may be less durable than stainless steel.
  • Needs a special flaring tool to fit properly.

Perfect For:

This kit is for DIY car fans and pro mechanics who work on engines and fuel, brake, or cooling lines. It features 6AN fittings, an aluminum sleeve, and a 37° flare for strong, leak‑free joints.

Ready to Purchase?

4. EVIL ENERGY 6AN Male Flare to 1/2″ NPT Pipe Fitting Adapter Aluminum Straight Black 2PCS

EVIL ENERGY 6AN Male Flare to 1/2

EVIL ENERGY brings you a top-notch adapter for your systems. It connects 6AN male flare to 1/2″ NPT pipe with ease. Get two pieces in sleek black aluminum.

This fitting is made from strong 6061-T6 aluminum alloy with a tough anodized finish. It seals well on both ends for reliable use.

Install it fast with just a wrench. It works great in fuel, cooling, and power steering systems. Add sealant to the NPT side to stop leaks.

Pros Cons
  • Durable aluminum alloy builds trust for long use.
  • Precise fit matches your custom needs perfectly.
  • Easy install with a wrench saves time.
  • Versatile for fuel, cooling, and steering systems.
  • Reliable seals prevent leaks under pressure.
  • Sealant needed for the NPT end.
  • Wrench required for install.

Perfect For:

Need to connect AN6 fittings to a 1/2″ NPT pipe? Then the EVIL ENERGY adapter is your answer! It’s perfect for anyone working on fuel, cooling, or power steering systems.

Ready to Purchase?

5. CNRAQR Aluminum 1/4″ NPT Female Weld on Bung Weldable Fitting 4PCS

CNRAQR Aluminum 1/4

Need a reliable fitting? The CNRAQR Aluminum Weld on Bung is your answer!

This fitting is easy to use and built to last. It’s made of strong aluminum. Get yours now and seal the deal!

Pros Cons
  • Wide uses for fuel tanks, pipes, and more.
  • Strong aluminum alloy ensures great durability.
  • Handles up to 1,500 psi pressure safely.
  • Works in extreme temperatures from -65°F to 252°F.
  • Get a two-month return if needed.
  • Welding is required for installation.
  • Aluminum may not suit all applications.
  • 1/4″ NPT size may limit compatibility.

Perfect For:

Looking for the perfect weld-on bung for your project? If you work on fuel tanks, intercoolers, or intake manifolds, this is for you. These high-quality aluminum fittings are durable and easy to install.

Ready to Purchase?

6. EVIL ENERGY 6AN Male to 5/16″ Hardline Compression Fitting Adapter Aluminum Black 2PCS

EVIL ENERGY 6AN Male to 5/16

Need to connect a hardline to your fuel system? This EVIL ENERGY fitting is your answer! It adapts a 6AN male flare to a 5/16 inch hardline. Get a tight, reliable seal every time.

It’s crafted from aluminum alloy and brass. This gives you maximum durability. The 37-degree flare angle guarantees a perfect seal.

It’s only for stainless steel or aluminum hardline. Make sure it’s the right size.

Pros Cons
  • Easy connection with 5/16″ hardlines.
  • Made with durable aluminum alloy for long life.
  • Secure sealing with a 37-degree angle.
  • Perfect for fuel systems and engine upgrades.
  • Only fits specific size 5/16″ hardlines.
  • Limited material use: stainless steel/aluminum only.
  • Brass ferrule may corrode over time.

Perfect For:

Are you looking to upgrade your fuel system? The EVIL ENERGY 6AN Male to 5/16″ Hardline Compression Fitting Adapter is perfect for fuel delivery and engine modification. If you’re using stainless steel or aluminum hardlines, this is a must-have!

Ready to Purchase?

7. CNRAQR Straight 6AN Male Flare to 3/8NPT Pipe Fitting Adapter Aluminum Black 2Pcs

CNRAQR Straight 6AN Male Flare to 3/8NPT Pipe Fitting Adapter Aluminum Black 2Pcs

Upgrade your fuel system with these CNRAQR Straight 6AN Male Flare to 3/8NPT Pipe Fitting Adapters. They fit oil coolers, fuel tanks, and hose lines perfectly. The set includes two durable black adapters ready to enhance your setup.

These adapters work with alcohol fuels, water, and oil for wide use. They feature precise 37-degree seals on the AN side for zero leaks.

Made from strong aluminum alloy with a polished finish for top quality. Use PTFE tape on the NPT end to prevent drips. Enjoy a two-month return policy and quick help if you have questions.

Pros Cons
  • Widely used for oil, fuel, lines.
  • 37° flare seal ensures leak-free fit.
  • Aluminum alloy body—light and strong.
  • Black anodized finish protects and looks great.
  • Two-month return service for peace of mind.
  • Requires sealant to stop leaks.
  • Only 2 pieces in the pack.
  • Aluminum may wear in harsh conditions.

Perfect For:

This product is perfect for car enthusiasts who build or upgrade fuel systems in their rides. It fits right into oil coolers and fuel lines for a leak-free setup that’s easy to install.

Ready to Purchase?

8. Podavelle 6AN Male Flare to 1/4 NPSM Transmission Cooler Adapter Fitting Aluminum Black Fits TH350 TH400 4L60E 700R4 200-4R TR6060 AOD 4R100 4R70W C5, Pack of 2

Podavelle 6AN Male Flare to 1/4 NPSM Transmission Cooler Adapter Fitting Aluminum Black Fits TH350 TH400 4L60E 700R4 200-4R TR6060 AOD 4R100 4R70W C5, Pack of 2

Ready to upgrade your transmission cooler lines? These Podavelle fittings are exactly what you need. They’re built to replace your old, worn-out adapters. Get ready for a cooler and better-performing ride!

These adapters are made from strong aluminum. They also work with many types of fuel.

Pros Cons
  • Perfect fit: Replaces OEM adapters in many transmissions.
  • No cracking: Prevents damage with straight threads.
  • Strong & light: Made from tough, lightweight aluminum.
  • Fuel-friendly: Works with gasoline & alcohol fuels.
  • Aluminum may corrode in tough environments.
  • Only fits certain transmission models.
  • Straight threads mean no tapered seal.

Perfect For:

Are you upgrading your transmission cooler lines? These Podavelle fittings are perfect for you. They fit many common transmissions and make your install easy.

Ready to Purchase?

9. EVIL ENERGY 10AN Straight Push Lock Hose Fitting End Black

EVIL ENERGY 10AN Straight Push Lock Hose Fitting End Black

This EVIL ENERGY 10AN Straight Push Lock Hose Fitting End Black fits 10AN to 5/8″ barb. It has a 7/8-14 UNF thread for a tight fit.

Works only with rubber fuel lines. Max pressure 1,500 PSI. Temp range -40℉ to 248℉.

Made from 6061-T6 aluminum alloy for strength. Easy to install and use with clamps for better seal.

Pros Cons
  • Strong aluminum alloy ensures lasting durability.
  • Handles up to 1,500 PSI of pressure safely.
  • Works in extreme temperatures from -40℉ to 248℉.
  • Simple installation with clamps for a tight seal.
  • Perfect fit for rubber fuel lines only.
  • Limited to rubber fuel lines only, no other types.
  • Clamps required for secure sealing, adds extra steps.
  • Aluminum build might corrode in harsh conditions.

Perfect For:

This EVIL ENERGY fitting is perfect for anyone needing a reliable fuel line connection. It’s great for cars and trucks!

Ready to Purchase?

10. Shineyoo 6AN Straight End Fitting 4 Pcs for Braided Fuel Oil Gas Line Hose End 6 AN Fittings Aluminum Black

Shineyoo 6AN Straight End Fitting 4 Pcs for Braided Fuel Oil Gas Line Hose End 6 AN Fittings Aluminum Black

Upgrade your ride with the Shineyoo 6AN Straight End Fitting! This 4-piece set is perfect for your braided fuel, oil, or gas lines. It’s a must-have for any car enthusiast.

These AN6 fittings are built tough with aluminum alloy. They have a swivel design for easy assembly. Use them for many different fluids, like oil, fuel, and water.

The Shineyoo fittings are designed for universal use. Contact us if you have any questions.

Pros Cons
  • Strong 6061-T6 aluminum for durable, long-lasting performance
  • Black anodized finish resists corrosion and looks great
  • Swivel design allows easy, fast assembly
  • Includes 4 straight swivel fittings for multiple connections
  • Works with braided fuel and oil lines for versatile use
  • Might leak without the O-ring.
  • Not compatible with PTFE hoses.
  • Requires special wrenches to install.

Perfect For:

This Shineyoo 6AN Straight End Fitting is perfect for car or truck lovers. It’s great for anyone who wants to upgrade their fuel, oil, or gas lines.

Ready to Purchase?

Buying Guide

Aluminum AN fittings boost your car’s performance. They connect fuel lines and cooling systems well. Pick the right ones for a smooth upgrade.

Users love how these fittings hold up under pressure. One driver said, “I installed EVIL ENERGY 12AN bungs on my fuel tank. No leaks after months of hard driving.” Another shared, “The CNRAQR 10AN fittings fit my diesel setup perfectly. Easy to weld and super strong.”

  • Size and Thread Type: Match the size to your lines, like 6AN or 10AN. Check thread specs, such as 1/16-12 UNF. Wrong size causes leaks and poor fits.

  • Material Quality: Look for 6061-T6 aluminum alloy. It resists corrosion and handles heat well. Strong material lasts longer in tough engine spots.

  • Pressure and Temperature Rating: Aim for at least 1000 PSI rating. They should work from -65°F to 250°F. This keeps systems safe during high-speed runs.

  • Seal Type: Choose 37-degree flare seals for tight connections. They prevent drips in fuel and brake lines. Good seals mean reliable performance.

  • Compatibility: Ensure it fits your fluids, like E85 or water. Some work only with rubber hoses or hardlines. Test fit before full install.

  • Ease of Installation: Pick fittings with wrench flats or swivel designs. Use tools like flare kits for best results. Simple installs save time and hassle.

  • Pack Size and Brand: Buy packs of 2 or 4 for projects. Brands like EVIL ENERGY offer good returns. Trusted names mean fewer worries.

  • Finish and Color: Anodized black finish fights wear. It looks clean under the hood. Choose based on your car’s style.