16 AN Flare Plug and Caps Aluminum. AN flare caps seal a male AN fitting while flare plugs seal a female AN port. Black anodized aluminum, available from 3 AN through 16 AN.
A dependable fluid system leaves nothing exposed and nothing unprotected. Allstar Performance Fitting Plugs securely seal unused ports throughout fuel, oil, cooling, brake, transmission, and hydraulic systems, helping maintain leak-resistant performance while protecting internal components from contamination. Precision machined for reliable fitment and built to withstand demanding automotive environments, these durable plugs provide the finishing touch every professionally built plumbing system deserves.
