Description
When precision and reliability matter most, the Aeroquip FCM2931 delivers a seamless connection between your -4 AN and 1/2-20 inverted flare fittings with zero compromise. Built from hardened steel, this adapter is engineered to handle demanding automotive and performance applications with confidence. Whether you’re building a custom brake or fuel line system, this is the fitting that gets the job done right the first time.
- Part Number: FCM2931
- Type: Straight adapter
- Inlet: 4 AN Male
- Outlet: 1/2-20 Inverted Flare Male
- Material: Steel
- Finish: Natural
- Application: Hardline use
- Sold as: Pair
- Brand: Aeroquip
Aeroquip has been a trusted name in performance fluid transfer for decades, and the FCM2931 is a perfect example of their commitment to quality. Grab this adapter and keep your build tight, clean, and leak-free.






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