Works well.

Too small for 1/4 inch even went I tried to grind the inside

Ordered 2, 1 worked fine and the other stripped out before I could tighten it

Easy to use, great quality. Work just like I need it to. Best bang for your buck. Looks and fits great.

I just piped two cars with all different Evil Energy fittings. They have been working great. I have Evil Energy stickers everywhere (if you've purchased these before you'll know what I mean).

The EVIL ENERGY 4AN Male to 1/4" Hardline Compression Fitting Adapter Aluminum Black is a high-performance adapter designed for automotive and motorsports applications. It's part of EVIL ENERGY’s lineup of fuel system components, and it’s engineered to connect 4AN braided fuel lines to 1/4" hardline tubing, offering a secure and leak-free connection for fuel systems, oil lines, or other fluid transfer setups. Below is a detailed review of its features, performance, and overall value:Features & Specifications:Material Construction: The adapter is made from high-quality aluminum, which is both lightweight and strong. The aluminum construction provides corrosion resistance and durability, making it ideal for automotive and motorsports environments where components are exposed to high temperatures and harsh conditions.Compression Fitting Design: The adapter features a compression fitting design, which ensures a tight seal and secure connection when used with 1/4" hardline tubing. This type of fitting is highly effective at preventing fuel or fluid leaks, ensuring the system remains safe and reliable.Compatibility: It is designed to connect a 4AN male fitting (typically used for braided fuel lines) to a 1/4" hardline tube. This makes it highly versatile for use in fuel systems, oil lines, and brake lines, especially for those running custom or performance setups with hardline tubing for greater rigidity and neatness.Finish: The adapter is finished with a black anodized coating, which not only enhances its aesthetic appeal but also provides additional corrosion resistance. The sleek black finish complements other components in custom or performance vehicle builds.Easy Installation: The compression fitting design allows for easy installation, requiring only simple hand tools to securely connect the adapter to both the braided fuel line and the hardline tubing. This ease of use makes it a popular choice for custom builds and modifications.Size: The 4AN male to 1/4" hardline fitting makes this adapter a practical solution for those using 4AN fuel lines and looking to transition to hardline tubing without sacrificing performance or risking leaks.Pros:Durability & Corrosion Resistance: The aluminum construction with an anodized black finish ensures that the adapter can handle high temperatures, pressure, and environmental factors while resisting corrosion and wear. This feature makes it perfect for use in harsh automotive and motorsports environments.Leak-Free Performance: The compression fitting design guarantees a secure and tight seal, minimizing the risk of leaks, which is essential in fuel systems, oil lines, and other high-pressure fluid systems. This is especially important in motorsports where performance and safety are crucial.Compatibility: The adapter’s ability to connect 4AN fuel lines to 1/4" hardline tubing makes it a versatile option for anyone working on custom automotive fuel systems, oil systems, or brake lines. It ensures compatibility with a wide range of components commonly used in performance builds.Lightweight: Being made of aluminum, this fitting is lightweight, which is an important feature for performance and race cars where every ounce counts. It adds minimal weight to the system while still providing strong and secure connections.Ease of Use: The compression fitting is simple to install, requiring basic hand tools, and it can be tightened without special equipment. This makes it a great option for DIYers and professionals who want a reliable, hassle-free connection.Aesthetic Appeal: The black anodized finish provides a sleek, professional appearance, which is a nice touch for custom builds. It complements other black or anodized components and enhances the overall look of the engine bay or undercarriage.Cons:Limited to Specific Sizes: This adapter is only suitable for those who are using 4AN braided fuel lines and need to transition to 1/4" hardline tubing. It may not be compatible with other AN sizes or tube diameters, limiting its versatility in some applications.Potential for Over-Tightening: Like many compression fittings, there is a potential for over-tightening, which can damage the fitting or cause deformation if too much force is applied during installation. Care should be taken to follow proper installation instructions to avoid this issue.Aluminum Durability: While aluminum is durable and corrosion-resistant, it is not as strong as other metals, such as steel. In some extreme applications or where extra strength is needed, aluminum fittings may not be the best option. However, for most automotive and motorsports uses, it is more than sufficient.Conclusion:The EVIL ENERGY 4AN Male to 1/4" Hardline Compression Fitting Adapter Aluminum Black is a highly reliable, durable, and versatile component for anyone working on custom automotive fuel systems, oil lines, or other high-pressure fluid systems. Its aluminum construction with black anodized finish ensures it can handle tough conditions while resisting corrosion, and its compression fitting design guarantees a secure, leak-free connection.While the adapter is designed for specific applications (4AN to 1/4" hardline), it is a perfect fit for performance and custom builds that require such connections. The easy installation, lightweight design, and aesthetic appeal make it a popular choice for both professional mechanics and DIY enthusiasts.If you're looking for a high-quality, durable fitting for your fuel or fluid lines, the EVIL ENERGY 4AN Male to 1/4" Hardline Compression Fitting Adapter offers excellent value, with both practical and aesthetic benefits.

Product makes my installation easy and quick, hassle free.

used for return line. no leaks. works good

No leaks so far despite various temperatures and weather. I didn’t get copper piece all the way on and it is still working despite the nature of the installation. Not sure as to why the copper piece didn’t slip all the way over the line but it’s working so I can’t complain.

Redid my 99 Suburban rotting fuel lines to AN line from engine to tank including vent lines. Install was easy, and so far no leaks. It survived a Chicago winter and hopefully many more.

I have been very happy with everything I have gotten from them!

There not as nice as earls or russel threads but they work just as good

Fast shipping. Great part will buy more