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AN Fittings & Adapters

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Snow Performance Bulkhead Fitting, 1/4" Push EPDM to 1/4" Push EPDM (SNO-40080)
Snow Performance Snow Performance Bulkhead Fitting, 1/4" Push EPDM to 1/4" Push EPDM (SNO-40080)$83.99
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Snow Performance Snow Performance -12 ORB to -12 AN Straight Fitting, Black (SNF-61210)$80.99
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Snow Performance Snow Performance -12 AN ORB to -10 AN Straight Fitting, Black (SNF-60102)$91.99

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AN adapters, unions, tees, bulkheads, plugs and port fittings in aluminum and steel — Vibrant Performance, Edelbrock and more.

AN sizing is a dash number, not an inch measurement — a -8AN fitting matches -8 hose, and the thread is a 37° flare that seals metal to metal without tape or sealant. Applying thread tape to an AN flare is the most common mistake in this category: it does nothing at the flare and can contaminate the fuel system downstream.

Pipe-thread adapters are a different matter. NPT threads seal on the taper and do need sealant, so a fitting with an AN end and an NPT end needs sealant on one half only. Anodised aluminum is light and adequate for most fuel and oil work; steel is what belongs anywhere subject to impact or high pressure.