About AutoPlumb Adapters

AutoPlumb Water Neck AN conversion adaptors have finally solved the problems associated with converting your cooling lines to AN hose and fittings. Our adaptors fit directly to the water neck, creating a strong positive seal with no welding or clamps necessary. The AutoPlumb conversion is a fully functional authentic AN system. Not a dress-up or AN look-alike. Everything you need to convert to AN is available here at AutoPlumb.com.