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0-180 Degree Detachable Quick Oil Cooling Joint

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10AN Female to 10AN Male Flare 90 Degree Swivel Hose Fitting Adapter

$16.99
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6AN Flare to 1/2″ NPT Male Straight Fitting Union Aluminum Flare Adapter (6AN-1/2NPT)

$8.99
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6AN-10AN All Degrees Aluminum Black Swivel Hose End Fitting For Braided Fuel Line

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6AN-10AN Black Straight Push Lock Hose Fitting End

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6AN-10AN Male Straight Bulkhead Flare Fitting Aluminum Union Adapter

$14.99
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6AN-10AN Straight Swivel Hose End Fitting For Braided Fuel Line Aluminum Alloy Black&Red

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Aluminum Black Male Coupler Flare Union Straight Fitting Adapter

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Enforced Hose End Fittings 90 Degree Elbow Aluminum Fitting

$16.99
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Fuel Oil Aluminum Male Weld On Fitting Bung Hose Adapter

$7.99
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The “AN” in AN Fittings refers to “Army/Navy”. AN fittings were the agreed upon standard by the military for hoses carrying liquids and gasses. It’s a set of sizes and sealing methods, making plumbing universal across different branches of the military.

AN fittings and hoses are often found installed on high performance and race cars. AN hoses are used for fuel, oil, coolant and hydraulic fluids. They are often used in aviation but like most high performance aviation equipment they eventually ended up on race cars and then street cars.

People use AN fittings because they look cool and provide a secure fitting that seals hoses better than traditional push on nipples and hose clamps. They form a serviceable connection that provides a reliable seal.