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Location: Home > All Forums > BMW Forums > BMW 5 Series (E39) Forum Roadfly Forums |
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| Message: | standard fitting that screws onto the bottle is an AN4...ArmyNavy4 (4/16) is what the AN4 stands for. An AN6 would be 6/16 or 3/8". Same here, after I used a metal lathe and a milling machine, I wanted one bad, but after looking into the weight of them I kinda gave up on the idea. | ||||