Work as well as the higher price fittings.

The EVIL ENERGY 4AN Male Tee Fitting Adapter with AN4 Female Swivel on Side is a high-performance fitting designed for use in automotive fuel, oil, and fluid systems. This adapter is especially useful for applications requiring a Tee connection, allowing you to split a single line into two separate branches. Below is a detailed review of the product based on its features, performance, and usability:Features & Specifications:Material: The fitting is made of aluminum, which provides a lightweight yet durable construction. Aluminum is commonly used in high-performance automotive applications due to its strength-to-weight ratio and corrosion resistance.Design: This adapter is a Tee fitting, with a 4AN male on the main port and an AN4 female swivel on the side. The male AN4 port is typically used to connect to a fuel line, while the female swivel port allows for easy attachment of additional accessories or lines, such as a sensor or filter.Swivel Function: The swivel feature on the female side allows for easy rotation of the attached hose or line, reducing strain on the hose and making installation more flexible. This feature is particularly useful in tight spaces or complex installations where adjusting the hose alignment can help avoid kinks or stress on the line.Black Anodized Finish: The fitting has a black anodized finish, which improves corrosion resistance and gives the fitting a sleek, professional appearance. The anodized layer also provides extra durability, protecting the fitting from scratches and abrasions.AN4 Compatibility: The fitting is designed for use with 4AN hoses, which are commonly used in automotive fuel, oil, and fluid systems. The AN4 size ensures compatibility with a range of hoses, making it a versatile choice for custom builds or repairs.Versatility: This Tee fitting is typically used in systems that require splitting a fluid line, such as connecting a fuel line to a fuel pressure regulator and a sensor, or for creating a bypass system. It is commonly found in fuel, oil, or coolant lines.Pros:Durable and Lightweight: The aluminum construction makes the fitting lightweight yet strong. Aluminum is ideal for reducing weight in high-performance vehicles while maintaining the structural integrity needed for fluid systems.Swivel Functionality: The swivel feature on the female side of the fitting makes installation and adjustments much easier. It allows for more flexibility in routing hoses and reduces the risk of damage to the hoses or fittings from kinks or twists.Corrosion Resistance: The black anodized finish helps protect the fitting from corrosion, ensuring that it performs reliably in demanding environments exposed to moisture, fuel, or oil.Easy Installation: The design of the 4AN male and AN4 female ports makes it easy to install with standard AN fittings and hoses. The swivel fitting also makes it easier to connect and adjust hoses in tight spaces without needing to disconnect everything.Versatile Application: The Tee design allows for splitting lines into two branches, making it useful for a variety of applications like fuel systems, oil systems, or coolant systems. It is commonly used in systems that need a diverting or splitting function without needing complex setups.Sleek Appearance: The black anodized finish not only increases durability but also gives the fitting a clean, professional look, making it ideal for custom builds or show cars where aesthetics matter.Cons:Not Suitable for Larger Fittings: This fitting is designed for 4AN connections, so it may not be ideal for larger setups requiring more flow capacity. If you're working with a high-flow system that needs larger ports (e.g., 6AN or 8AN), this may not be the best option.Potential for Damage to Hoses: While the swivel feature is convenient, it also requires that the attached hoses be correctly routed and tightened. If not properly installed, it could cause damage to the hose or lead to leaks. It's important to ensure that the fitting is securely tightened and aligned during installation.Aluminum May Not Suit All Applications: While aluminum is a good material for most automotive systems, it may not be the best option for extremely high-pressure applications. For systems exposed to extreme pressure, a stainless steel fitting may provide additional security and strength.Conclusion:The EVIL ENERGY 4AN Male Tee Fitting Adapter with AN4 Female Swivel on Side is a high-quality and versatile fitting that provides both performance and convenience in automotive fuel, oil, and fluid systems. Made from durable aluminum with a black anodized finish, it combines strength, corrosion resistance, and a sleek appearance, making it ideal for custom builds or repairs in a variety of applications.The swivel feature is one of the standout features, offering flexibility and ease of installation, particularly in tight spaces or complex systems. The Tee design allows for splitting fluid lines, making it suitable for systems that require additional ports, such as fuel regulators or pressure sensors.While it may not be suitable for extremely high-flow or high-pressure systems, the 4AN size and aluminum construction make it an excellent option for standard automotive fluid systems. The fitting’s easy installation and long-lasting durability make it a reliable choice for enthusiasts and professionals looking for an effective solution for their air, fuel, or coolant system setups.Overall, the EVIL ENERGY 4AN Male Tee Fitting Adapter is an affordable and well-designed option for anyone needing a Tee fitting adapter with swivel functionality, offering great value and dependability for most automotive applications.

The part seems well made and is lower in cost than some of the more traiditional brands in this space

second on of these that has leaked like a sieve. Lesson learned. these are 100% junk.

Great

I installed this in my fuel line 32 days after I purchased. It LEAKED! And I was passed the 30 day return window. It’s going in the garbage now

Good price, *usually* good quality. BUT... check them every time!Also, a bit under-sized. My "-8an" fitting measured 0.390" inside, not close to the 0.500 it is supposed to be. (Even after clearing the manufacturer's debris inside)