Made in USA
-4 AN Union - Steel
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FRAGOLA PERFORMANCE SYSTEMSPART NUMBER: 305-581504

-4 AN Union - Steel

$839
ShippingShips on 10/07/2026
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Steel AN Adapter
  • -4 AN Union - Steel
  • Machined Steel Construction for High-Pressure Service
  • Connects P.T.F.E. Lined Hose to Popular Calipers and Wheel Cylinders
  • AN 37 Degree Flare Sealing Surface

    Steel adapters are used where pressure and mechanical load rule out aluminum, most commonly on brake and clutch circuits and at hard line connections. Fragola machines these fittings from steel so the sealing surfaces hold up to repeated assembly, and the brake adapters connect -3 and -4 P.T.F.E. lined hose to most popular calipers and wheel cylinders.

    Technical Specifications:

    • -4 AN Union - Steel
    • Machined Steel Construction for High-Pressure Service
    • Connects P.T.F.E. Lined Hose to Popular Calipers and Wheel Cylinders
    • AN 37 Degree Flare Sealing Surface
  • Part TypeAdapter Fitting
    BrandFRAGOLA PERFORMANCE SYSTEMS
    Package Height1.0
    Package Width3.0
    Package Length5.0
    Weight0.1 PG
    Part CategoryPerformance Parts
    MaterialSteel
    Part FitmentUniversal
    An Size-4 AN
    Vendor Part Number581504
    Package Qty1
    Package TypeEA
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    Some parts are not legal for use in California or other states with similar laws / regulations
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