Which one fits a -10 ORB fuel rail port to a -6AN hose?

The Radium 14-0130 is made exactly for that: -10AN ORB in, -6AN male out. The EVIL ENERGY can also do it if you select -10 ORB and -6AN flare, but you must pick both sizes correctly at order.

Which is better for a high-pressure EFI fuel system?

Both are aluminum with O-ring sealing at the ORB port. EVIL ENERGY publishes a 1500 PSI working rating and a temperature range; Radium does not publish figures but is a dedicated fuel-system brand with a strong track record in EFI builds.

Does the EVIL ENERGY fit other sizes besides -10 to -6?

Yes. It covers 3AN through 20AN with both AN flare and ORB ends chosen independently, so it handles combinations the Radium single-size adapter cannot.

Both are 6061-T6 aluminum with anodized or bare finish and rubber O-rings, so service life depends on install torque and fluid exposure. The O-ring is the wear item on both; replace it if you see weeping at the port.

Is the Radium worth stepping up to over the EVIL ENERGY?

Only if you specifically need -10 ORB to -6AN and prefer a fuel-system specialist brand. For any other size combination, or if you want published pressure and temperature ratings, the EVIL ENERGY is the more flexible choice.

Do both need an O-ring at the ORB end?

Yes. ORB ports seal on an O-ring, not on threads. EVIL ENERGY specifies a fluorine rubber O-ring; check that the Radium adapter ships with its O-ring and that it matches your fluid.

Radium Engineering 10AN ORB to 6AN Adapter vs EVIL ENERGY AN Flare to AN ORB Adapter Fitting

These are different jobs, not rivals. The Radium 14-0130 is a single fixed adapter: -10AN ORB port to -6AN male, nothing else. The EVIL ENERGY is a size-selectable AN flare to ORB male adapter that lets you pick both ends independently. Radium is the better-known name in fuel-system plumbing and its O-ring sealing is proven in high-pressure EFI builds; EVIL ENERGY is the value pick with published pressure and temperature ratings and a wider size range. Buy Radium if your port is -10 ORB and your hose is -6AN and you want a known brand; buy EVIL ENERGY if you need any other size combination or a spare.

Choose the Radium Engineering 14-0130 if you have a -10AN ORB port feeding a -6AN hose and want a straight, single-purpose adapter from a fuel-system specialist.
Choose the EVIL ENERGY adapter if you need a size combination other than -10 ORB to -6AN, or want a rated 6061-T6 adapter with a published pressure and temperature spec.

Prices

Radium Engineering 10AN ORB to 6AN Adapter: $14.20 at Drift HQ (checked today)
EVIL ENERGY AN Flare to AN ORB Adapter Fitting: $9.49 at EVILENERGY (last seen Nov 9)
Difference: the EVIL ENERGY AN Flare to AN ORB Adapter Fitting is $4.71 cheaper than the Radium Engineering 10AN ORB to 6AN Adapter at the latest prices (Nov 9 and Nov 10)

	Radium Engineering 10AN ORB to 6AN Adapter	EVIL ENERGY AN Flare to AN ORB Adapter Fitting
Size options	One fixed combination: -10AN ORB in, -6AN male out	Both ends selectable across 3AN through 20AN
Connection type	ORB port to AN male only	AN flare to ORB male, male-to-male
Material	Aluminum, Radium fuel-system grade	6061-T6 aluminum, black anodized
Published pressure rating	Not stated on the listing	Up to 1500 PSI
Published temperature range	Not stated	-65°F to 252°F body, O-ring -4°F to 392°F
Sealing	O-ring at the ORB port	37-degree AN flare plus ORB O-ring
Wrench access	Straight body	Central hex for wrench access
Brand depth in fuel systems	Radium is a dedicated fuel-system and plumbing brand	EVIL ENERGY is a broad aftermarket parts brand

Spec	Radium Engineering 10AN ORB to 6AN Adapter	EVIL ENERGY AN Flare to AN ORB Adapter Fitting
Product type	—	AN Flare to AN ORB Male Adapter Fitting
Available sizes	—	4AN / 6AN / 8AN / 10AN / 12AN
Material	—	6061-T6 Aluminum
Surface finish	—	Black Anodized
Working pressure	—	Up to 1500 PSI
Operating temperature	—	-65°F to 252°F
O-ring temperature range	—	-4°F to 392°F

Radium Engineering 10AN ORB to 6AN Adapter vs EVIL ENERGY AN Flare to AN ORB Adapter Fitting

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Radium Engineering 10AN ORB to 6AN Adapter vs EVIL ENERGY AN Flare to AN ORB Adapter Fitting

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Radium Engineering 10AN ORB to 6AN Adapter

EVIL ENERGY AN Flare to AN ORB Adapter Fitting

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Radium Engineering 10AN ORB to 6AN Adapter

EVIL ENERGY AN Flare to AN ORB Adapter Fitting

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