Radium Engineering 20-1000-0865 Low Profile Swivel Banjo Fitting – 8AN ORB to 6.5mm Barb

Radium Engineering 20-1000-0865 is an 8AN ORB low profile swivel banjo fitting with a 6.5mm hose barb outlet. It threads into any 8AN ORB (3/4"-16 UNF) O-ring boss port and provides a 360-degree swiveling connection to a 6.5mm barb even after the fitting is fully installed and torqued. At just 0.797 inches (20.2mm) installed height, part number 20-1000-0865 is the solution for tight 90-degree connections where a standard elbow or hard-line fitting will not clear. Rated to 400 psi. Includes a preassembled FKM (Viton) O-ring. Stainless steel and anodized aluminum construction.

20-1000-0865 — Key Specs at a Glance

Why the Swivel Banjo Design Matters

Standard AN fittings require precise hose routing before you tighten them down once they're torqued, the hose angle is fixed. The Radium Engineering 20-1000-0865 solves that problem completely. The banjo body rotates a full 360 degrees around the 8AN ORB stud, so you can position the 6.5mm barb outlet at any angle before installation, and still reposition it after the fitting is fully torqued. This is particularly useful on Radium fuel rails, surge tank ports, and fuel pressure regulators where clearance to the firewall, intake manifold, or adjacent hardware is tight.

The low profile design 0.797 inches installed height keeps the fitting as close to the mounting surface as possible. In applications where a conventional 90-degree elbow would foul against a nearby component, the 20-1000-0865 often clears with room to spare. The FKM O-ring provides a reliable seal across the full range of compatible fluids including E85 and methanol, which are aggressive toward lesser seal materials.

Installation Notes

• Lubricate the FKM O-ring with clean engine oil, O-ring lubricant, or petroleum jelly before installation
• Thread into any 8AN ORB (3/4"-16 UNF) O-ring boss port
• Do not exceed 400 psi operating pressure
• Swivel body rotates freely at any point position barb outlet after torquing for final hose routing
• Compatible with all fuel types, engine oil, and coolant

Radium 20-1000-0865 vs. Companion Part Numbers

The 20-1000-0865 is the 6.5mm barb variant in Radium's 8AN ORB swivel banjo series. If your application uses a different outlet size or connection type, the following companion part numbers use the same banjo body with the same 8AN ORB inlet thread:

The same low profile swivel banjo design is also available with 4AN, 6AN, 10AN, 12AN, and M12x1.25 metric base thread sizes for other port configurations.

Frequently Asked Questions

What does 8AN ORB mean on the Radium 20-1000-0865?
8AN ORB stands for 8AN O-ring Boss. The thread is 3/4"-16 UNF and the seal is made by an O-ring that sits on a flat boss face not by thread taper like NPT. ORB fittings are a common standard on fuel rails, fuel pressure regulators, oil coolers, and other high-pressure automotive components. The 20-1000-0865 threads directly into any 8AN ORB port without adapters.

Can the 20-1000-0865 be repositioned after installation?
Yes. The swivel body of the 20-1000-0865 rotates a full 360 degrees even after the fitting is fully torqued into the port. This lets you set the final hose routing after the fitting is installed, and adjust it later if needed without removing or re-sealing the fitting.

Is the Radium 20-1000-0865 compatible with E85?
Yes. The FKM (Viton) O-ring included with the 20-1000-0865 is compatible with gasoline, E85, methanol, diesel, engine oil, and coolant. FKM is specifically chosen for its resistance to the alcohol content in E85 and methanol that degrades standard rubber seals.

What hose fits the 6.5mm barb on the 20-1000-0865?
The 6.5mm barb accepts 6.5mm (approximately 1/4 in.) inner diameter hose. This matches common OEM-style fuel hose and many braided rubber fuel lines used in factory fuel systems, injector return lines, and similar low-volume fuel plumbing. Secure with an appropriate hose clamp or fuel injection clamp.

What is the maximum pressure rating for the 20-1000-0865?
Radium Engineering rates the 20-1000-0865 to a maximum of 400 psi. This is well above typical automotive fuel system pressures (direct injection systems commonly operate at 100–200 psi) and suitable for high-performance forced induction fuel systems.

Where is the Radium 20-1000-0865 typically used?
Common applications include Radium fuel rails, surge tank inlet/outlet ports, fuel pressure regulator reference ports, and any location on a fuel or oil system where a standard 8AN ORB port needs to connect to 6.5mm OEM-style fuel hose. The low profile and swivel capability make it particularly useful in cramped engine bay locations.

Does the 20-1000-0865 come with an O-ring?
Yes. A preassembled FKM O-ring is included with every 20-1000-0865. Lubricate it with clean engine oil or petroleum jelly before installing to ensure a proper seal and prevent O-ring damage during installation.

What is the difference between the 20-1000-0865 and the 20-1000-0885?
Both are 8AN ORB swivel banjo fittings. The 20-1000-0865 has a 6.5mm barb outlet; the 20-1000-0885 has an 8.5mm barb outlet. Choose based on the inner diameter of the hose you need to connect. All other specs swivel, installed height, pressure rating, materials are the same between the two.