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The Cleanest Way to Join Two -20AN Female Lines Without Compromise
The Vibrant VIB10707 is a straight female-to-female -20AN flare union adapter machined from 6061 aluminum alloy and finished in black anodize. It is designed for applications where two -20AN female-threaded lines or components need to be joined inline with zero flow restriction, a leak-resistant seal, and minimal weight penalty. Whether used in oil return lines, fuel systems, or custom plumbing for high-flow turbo or supercharger builds, the VIB10707 delivers the precision fit and material quality that Vibrant Performance has built its reputation on across the performance AN fitting market.
Key Features
- Straight female-to-female -20AN flare union design for inline line connections
- 6061 aluminum alloy construction for lightweight strength and corrosion resistance
- Black anodized finish for durability and a clean underhood appearance
- Precision machined threads for a leak-resistant seal on both ends
- Smooth bore interior minimizes flow restriction in high-volume plumbing applications
- Compatible with all standard -20AN female-threaded fittings and hose ends
- Available in black anodized finish only
Specifications
| Detail | Value |
|---|---|
| Part Number | VIB10707 |
| AN Size | -20AN |
| Connection Type | Female to Female Straight Union |
| Material | 6061 Aluminum Alloy |
| Finish | Black Anodized |
| Thread Standard | AN/JIC 37-degree Flare |
| Application | Oil, Fuel, Coolant, Air Lines |
| UPC | Available on packaging |
What's Included
- 1x Vibrant VIB10707 -20AN Female Straight Union Adapter, black anodized
About Vibrant Performance
Vibrant Performance is a North American manufacturer of high-quality AN fittings, hose ends, exhaust components, and fabrication hardware trusted by professional builders and enthusiasts worldwide. Their aluminum adapter fittings are machined to exacting tolerances and designed for long-term reliability in demanding automotive plumbing applications from street builds to full race setups.
Frequently Asked Questions
What is the VIB10707 used for?The VIB10707 is a straight female-to-female -20AN union adapter used to connect two -20AN female-threaded lines or components inline. Common applications include large-diameter oil return lines, fuel supply lines, and custom plumbing in high-flow forced induction builds where -20AN fittings are required.
What material is the VIB10707 made from?The VIB10707 is machined from 6061 aluminum alloy and finished in black anodize. This construction provides a good combination of light weight, corrosion resistance, and strength for typical automotive fluid plumbing use.
Is this fitting compatible with braided stainless hose ends?Yes. The VIB10707 uses standard -20AN 37-degree flare thread geometry, which is compatible with all standard AN hose ends and braided line assemblies in the -20 size.
Can the VIB10707 be used for fuel lines?Yes. The 6061 aluminum construction and smooth bore interior are suitable for fuel line applications. Ensure all fittings and hose material in the assembly are rated and compatible with the specific fuel type being used, including ethanol blends if applicable.
Is this fitting available in silver or any other finish?The Vibrant Performance female AN flare union adapter line is available in black anodized finish only. If a natural aluminum finish is required, check Vibrant's current catalog for alternative fitting options in the -20AN size.
What is the thread pitch on the VIB10707?The VIB10707 uses the standard AN/JIC 37-degree flare thread geometry. For -20AN, this corresponds to a 1-5/16-12 thread specification. Always verify thread compatibility with your connecting components before assembly.
Is the VIB10707 suitable for use with coolant lines?Aluminum AN fittings are generally compatible with coolant systems in performance builds. Verify that all other components in the coolant circuit are similarly rated and that the installation does not mix incompatible metals in a way that promotes galvanic corrosion.
How do I install an AN union adapter without leaks?Clean all threads before assembly and hand-tighten the fitting finger tight before using a wrench. AN 37-degree flare connections seal on the flare face, not on the threads. Over-tightening can damage the flare seat and cause leaks. Follow standard AN assembly torque practices and pressure test the system before operation.
Installation Overview
- Inspect the VIB10707 and both mating fittings for any damage or debris before assembly.
- Thread one side of the adapter onto the first fitting or component finger tight.
- Use an appropriate AN wrench to tighten to standard AN assembly torque, being careful not to overtighten and damage the flare seat.
- Connect the second fitting or hose end to the opposite end of the VIB10707 and repeat the tightening process.
- Pressure test the completed assembly before returning the system to normal operation to verify a leak-free installation.
Fabrication
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Fittings
Automotive fluid system fittings are the hardware that connects hoses, hard lines, and components within fuel, oil, cooling, brake, power steering, and intercooler circuits, and the quality and correct sizing of these fittings directly determines whether a high-performance fluid system remains leak-free under the pressure, temperature, and vibration conditions that race and street performance environments produce. The AN fitting standard, derived from military Aircraft-Navy specifications, provides a consistent thread and flare geometry across fuel, oil, and hydraulic applications that allows interchangeability between brands and simplifies system design by providing a known thread engagement and sealing approach for every connection. Swivel fittings, bulkhead adapters, 45-degree and 90-degree elbow fittings, tee and union adapters, and reducer fittings allow performance builders to route lines through tight spaces and around obstacles while maintaining correct flow area without res...
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Vibrant
Shop premium Vibrant Performance parts at Black Ops Auto Works, your trusted source for Vibrant exhaust components, resonators, mandrel bends, silicone couplers, hump hoses, AN fittings, PTFE hose ends, fabrication parts, fuel system fittings, and performance plumbing components. Vibrant Performance is known for producing high-quality exhaust fabrication and fluid transfer products engineered for fitment, durability, airflow, and race-ready reliability. Whether you are building a turbo setup, custom exhaust, intercooler piping system, fuel system, hot side charge pipe, or full race car, Vibrant products deliver the precision and performance serious builders demand. Shop Vibrant Exhaust, Fabrication & Performance Plumbing Parts At Black Ops Auto Works, we carry a wide selection of Vibrant Performance fabrication parts and plumbing components for street, race, drift, off-road, and custom builds. Popular Vibrant Product Categories: Exhaust Components & Resonators – Stainless ...
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