12AN Male to Parallel Exit Dual 12AN Y Block Fitting Splitter Adapter

In this review of the EVIL ENERGY 12AN Male to Parallel Exit Dual 12AN Male Y Block Fitting Splitter Adapter the bottom line is straightforward: this is a solid, no-nonsense adapter for anyone who needs to split fluid flow reliably. The reviewer found it best suited to automotive, racing, and custom plumbing tasks where a compact, high-pressure rated splitter is required. The standout reason to buy is its durable 6061-T6 aluminum construction and black anodized finish that provide corrosion resistance while handling up to 1500 PSI.

Key Features

• Thread Size: The 12AN thread standard (1 1/16-12 UNF) ensures compatibility with common AN fittings used in fuel and oil systems.
• High Working Pressure: Rated to 1500 PSI so it suits high-pressure fuel, oil, and coolant lines without immediate concern for failure under normal operating conditions.
• Temperature Range: Operating from -40F to 250F allows use across a wide span of environments from cold storage to hot engine bays.
• Material and Finish: Machined from 6061-T6 aluminum and black anodized, the Y block resists oil, rust, and corrosion for longer service life in harsh applications.
• Sealing Design: The AN side uses a 37-degree sealing angle, which is the standard sealing method for AN fittings and provides reliable leak resistance when installed correctly.
• Versatile Media: Compatible with oil, fuel, coolant, water, air, and gas, making it useful in a broad set of fluid routing situations.

Who It's For

This adapter is ideal for automotive enthusiasts, race teams, and mechanics who need to split a single AN line into two parallel feeds, such as dividing a fuel feed to dual rails or branching coolant lines. It is also useful for custom fabrication shops and hobbyists working on fluid transfer systems that require an AN-standard connection.

It is not intended for users who require metric threads or plumbing connections outside the AN system; anyone needing extremely high temperature tolerance above 250F or specialized sealing materials should look at alternative fittings or adaptors designed for those extremes.

Pros & Cons

Pros

• Sturdy 6061-T6 aluminum construction provides a lightweight but strong splitter body suitable for engine bay use.
• Black anodized finish offers resistance to oil, rust, and corrosion in demanding environments.
• 1500 PSI working pressure rating covers most automotive and motorsport fluid applications.
• Universal 37-degree AN sealing angle integrates with common AN hoses and fittings for reliable sealing.

Cons

• Limited to 12AN thread size, so users with other AN sizes will need adapters or different fittings.
• No integrated check valves or additional fittings; it only splits flow in parallel and relies on the rest of the system for control.

Specifications

Thread Size	12AN (1 1/16-12 UNF)
Material	6061-T6 aluminum
Finish	Black anodized
Max Working Pressure	1500 PSI
Temperature Range	-40F to 250F
Sealing Angle	37-degree AN seal
Applicable Media	Oil, fuel, coolant, water, air, gas

Our Verdict

The EVIL ENERGY 12AN Y block is a practical, well-built splitter for AN plumbing projects where durability and a 1500 PSI rating matter. Buyers who run 12AN systems and need a compact parallel feed will find good value here thanks to the anodized 6061-T6 construction and standard 37-degree sealing. It is a straightforward component that performs its intended role without frills.

Frequently Asked Questions

Will this fit my existing AN hoses?
Yes, it uses standard 12AN threads (1 1/16-12 UNF) and the 37-degree AN sealing surface, so it mates with other compatible 12AN fittings when installed correctly.

What fluids can be used with this fitting?
The fitting is rated for oil, fuel, coolant, water, air, and gas, making it suitable for most typical automotive and workshop fluids.

Is the finish corrosion resistant?
The black anodized finish provides oil, rust, and corrosion resistance, helping the aluminum hold up in harsh environments.