MechPort 2 Pack AN6 Fuel Line Cap Plug Black anodized Compatible with Universal 6AN Hose and Adapter

AN6 fuel line cap: compatible with universal 6AN hose ends, fittings, adapters, fuel rail and oil cooler ports, offering quick sealing during service or storage to reduce drips, block debris and protect threads. AN fitting plug: seals unused fuel or oil lines to help contain residual fluid, prevent ingress of dust and moisture, and cap test or spare ports during maintenance, engine swaps, towing or long term vehicle storage. Aluminum alloy construction: CNC machined for a precise 37 degree flare seat and secure thread engagement, with black anodized finish that resists corrosion and scratches while keeping weight low for motorsport and workshop use. AN6 size and thread: size 6AN with 9/16-18 UNF JIC thread, hex head allows wrench tightening, compact profile fits tight engine bays, compatible with straight or angled 6AN hose ends and common aftermarket adapters. Versatile applications: use in home garage, professional shop or race track to cap fuel feed, return or oil lines on cars, boats and powersports vehicles, simplifying system flushing, storage, troubleshooting and leak checks.