When plumbing critical hydraulic systems like brakes, clutches, or turbo oil feeds, minimizing the number of adapter fittings is the golden rule for preventing leaks. The Fragola -4 AN to -3 AN Straight PTFE Hose End is a unique, problem-solving "hybrid" fitting designed to do exactly that.
This specific 6000-Series fitting allows a builder to assemble onto a standard -4 AN PTFE lined hose, but the female swivel nut on the end is stepped down to a smaller -3 AN size.
Key Features
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Hybrid Size (Step-Down): Eliminates the need for a separate -4 to -3 reducer fitting, saving space, weight, and removing a potential failure point in high-pressure plumbing systems.
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PTFE-Specific Sealing: Designed exclusively for PTFE (Teflon) lined stainless braided hoses. It uses a miniature internal ferrule ("olive") to bite directly into the Teflon core for a leak-proof mechanical seal.
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Heavy-Duty Steel Construction: Unlike aluminum fittings, this zinc-plated steel fitting will not gall, crack, or strip under heavy torque, making it a mandatory safety upgrade for high-vibration brake and turbo lines.
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Reusable Design: If a plumbing route needs to change, the builder can simply cut the hose, replace the inexpensive internal ferrule, and reuse this entire steel fitting endlessly.
Specifications
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Hose Compatibility: -4 AN PTFE (Teflon) Lined Hose ONLY
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Nut Size (Female Swivel): -3 AN
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Fitting Angle: Straight
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Style: Reusable / Ferrule-Style Step-Down
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Material: Steel
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Finish: Zinc Plated (Silver/Clear)
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