Vibrant Performance 10840 -3AN Female to -4AN Male Expander Adapter Fitting

The Vibrant Performance 10840 expander adapter fitting provides a reliable connection between -3AN female and -4AN male fittings. Designed for automotive fluid, fuel, oil, and other compatible line applications, this straight adapter helps transition between different AN fitting sizes while maintaining a clean, serviceable installation. Its compact form is suitable for tight engine bay and motorsport plumbing layouts.
Constructed from lightweight aluminum, the Vibrant Performance 10840 fitting features a black anodized finish that supports corrosion resistance and provides a professional appearance. The precision-machined design promotes consistent thread engagement and dependable sealing when installed with compatible AN components. This adapter is intended for use with properly matched fittings and should be installed according to the requirements of the complete plumbing system.
Whether used in a custom fuel system, oil line, brake-related application, or performance vehicle plumbing project, this -3AN female to -4AN male expander adapter offers a practical solution for connecting different line sizes. The straight configuration simplifies routing and helps reduce unnecessary bends, making it a useful addition to race, street, and fabrication applications. Each package includes one Vibrant Performance 10840 adapter fitting.

Features:

• Brand: Vibrant Performance

• Part Number: 10840

• Fitting Type: Straight expander adapter

• Connection Size: -3AN female to -4AN male

• Material: Aluminum

• Finish: Black anodized

• Application: Compatible automotive fluid, fuel, oil, and performance plumbing systems

• Quantity: Each