SKU: RHP806-20-2
UPC: 848487022128
MPN: 806-20-2
The REDHORSE PERFORMANCE 20AN Flare Plug in black is a -20 AN male fitting built to seal an open hose end or close off a port in a custom plumbing system. It's aimed at fabricators and racers running large-diameter -20 lines for fuel, oil, or coolant feeds where a clean, leak-free cap is needed at the end of a run. Machined from aluminum and finished in black anodize, this plug from the 806 Series matches the look of the rest of a typical AN build. It ships one per package under part number 806-20-2, sold through our fittings, hoses and valves lineup.
This plug uses the standard 37-degree AN flare seat, so it seals against a female -20 AN B-nut or swivel without thread sealant or O-rings. The hex head gives a wrench flat for tightening it down by hand tools rather than relying on grip alone, which matters on the larger -20 size where flare contact area is significant. The body is lightweight aluminum with a black anodized finish per the published 806 Series specs, keeping weight down on a build where every fitting adds up. Because it's a male flare plug rather than a port plug, it threads into the open end of a -20 line termination. Smaller sizes in the same family are available through our 12AN flare plug and 10AN flare plug listings.
Reach for a -20 flare plug when you've run a large feed line and need to cap a leg you're not using yet, or when you want to pressure-test a system before final assembly. It's common on dry-sump oil systems, big fuel cell setups, and coolant plumbing on race builds where -20 hose is the right diameter for the flow. Keep one or two on the bench so a teardown or revision doesn't leave an open line. For matching hose ends, unions, and tees, browse the full AN fittings selection and pair them by size.
It seals against a female -20 AN connection using the standard 37-degree AN flare seat. That means it mates to a -20 AN B-nut, swivel, or hose end without needing thread sealant or O-rings. Tighten it with a wrench on the hex head to set the flare contact and close off the line.
It is machined from lightweight aluminum with a black anodized finish, per the published 806 Series specs. Aluminum keeps weight low on a custom build and resists corrosion through the anodizing. It is sold one plug per package under part number 806-20-2.
A male flare plug like this one caps the open end of an AN line by mating to a female AN fitting at the 37-degree flare. A port plug threads directly into a tapped port on a component. Use a flare plug to close off a hose-end termination, and a port plug to close a threaded boss.
Yes. Capping an unused -20 leg with this plug lets you pressurize and check a fuel, oil, or coolant system for leaks before final assembly. The metal-to-metal flare seal holds without additional sealant, so it's a clean way to block a line during testing or a build revision.
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