Description
Aeroflow Female to Male AN Flare Expander -4AN to -6AN (Black)
Step up your fluid plumbing sizing easily with the Aeroflow Performance -4AN Female to -6AN Male Flare Expander fitting.
Product Overview
Engineered for high-performance motorsport and custom automotive plumbing, the Aeroflow AF951-04-06BLK Female to Male AN Flare Expander allows seamless transition from a smaller -4AN male flare thread to a larger -6AN male flare line. Precision CNC-machined from lightweight 6061-T6 billet aluminium, this fitting guarantees reliable fluid containment and high burst pressure resistance under demanding race conditions.
Finished in a corrosion-resistant black anodised coating, it offers a sleek aesthetic while defending against aggressive fuels, oils, and synthetic fluids. Ideal for custom fuel systems, oil lines, and turbo plumbing setups.
Key Features
- ☑ Precision CNC-machined 6061-T6 billet aluminium construction
- ☑ -4AN female thread to -6AN male flare expander configuration
- ☑ Hard-anodised black finish for superior corrosion and wear resistance
- ☑ 37° JIC flare sealing profile ensures leak-free high-pressure operation
- ☑ Universal application across oil, fuel, coolant, and vacuum systems
Technical Specifications
| Manufacturer | Aeroflow Performance |
|---|---|
| Part Number | AF951-04-06BLK |
| Fitting Type | AN Flare Expander Adapter |
| Inlet Fitting Size | -4AN Female (7/16″-20 UNF) |
| Outlet Fitting Size | -6AN Male (9/16″-18 UNF) |
| Flare Angle | 37 Degrees JIC / AN Standard |
| Material | 6061-T6 Billet Aluminium |
| Finish | Black Anodised |
What’s Included in the Box
- 1 x Aeroflow -4AN Female to -6AN Male Flare Expander (Black) – AF951-04-06BLK
Aeroflow Performance products are built to rigorous quality standards for race track reliability. At JP Racing, we maintain extensive inventory and offer fast UK dispatch alongside expert technical support to keep your build moving forward without delay.







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