Radium Engineering 16AN ORB Male to 10AN ORB Female Full-Flow Reducer Coupler
The Radium 14-0698 is the industry-standard adapter for stepping down from any 16AN O-ring port (Radium FCST, fuel rails, surge tanks, catch cans, etc.) to a standard 10AN line. CNC-machined from 6061-T6 aluminum with deep green Type-II anodizing and Viton O-rings, it features a true full-flow internal bore with zero restriction – perfect for 1000+ hp return lines, dual-pump surge tanks, or dry-break setups.
Key Features
- 16AN ORB Male → 10AN ORB Female
- 100% Full-Flow Bore – no step, no restriction
- 6061-T6 Aluminum + Green Anodizing
- Viton O-Rings Included – compatible with all fuels, E85, methanol, oil
- Made in the USA – lifetime Radium warranty
Product Notes
- Directly replaces 20-1000-1610 (same part, new part number)
- Black version available → 14-0698-BLK
Installation Notes
- Torque to 30–35 ft-lbs with light oil on O-ring
- Use with any 16AN ORB port and 10AN hose end
This Part Fits
Universal any application requiring 16AN ORB to 10AN ORB transition
Why Choose Radium Engineering?
- The #1 name in high-end fuel system plumbing
- Every fitting designed and machined in Oregon, USA
- Trusted by every major 1500+ hp Subaru, BMW, Honda, and Toyota build
Frequently Asked Questions
-
Q: Will this work on my Radium Fuel Cell Surge Tank?
A: Yes, this is the exact fitting Radium specifies for 10AN return lines. -
Q: Is the bore stepped or full-flow?
A: Completely full-flow zero pressure drop. -
Q: Black version available?
A: Yes, search 14-0698-BLK.
Shipping & Handling
- Method: UPS/FedEx Ground
- Availability: Always in stock
- Packaging: Individually bagged with Viton O-ring
Fabrication
Shop Fabrication Parts & Materials at Black Ops Auto Works for stainless steel tubing, titanium tubing, aluminum charge piping, mandrel bends, V-band clamps, flanges, merge collectors, AN fittings, PTFE hose kits, braided fuel and oil lines, heat shields, welding supplies, brackets, bungs, and hardware for building custom exhaust systems, turbo plumbing, intercooler piping, fuel systems, and engine bay routing. Start with tubing (304 or 321 stainless, titanium, or aluminum) in the right diameter and wall thickness, then add mandrel bends, flanges, V-bands, and clamps to complete the joint work. AN plumbing follows the same pattern: match dash size to horsepower target, pair the right hose (PTFE or CPE) with matching hose ends, and use adapters, bulkheads, and distribution blocks to route fuel, oil, and coolant cleanly. Shop by material (stainless, titanium, aluminum), fitting type (AN, ORB, NPT), diameter, or brand (Vibrant, Ticon, Stainless Bros, Radium, Fragola, DEI, ATP). ...
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Fittings
Automotive fluid system fittings are the hardware that connects hoses, hard lines, and components within fuel, oil, cooling, brake, power steering, and intercooler circuits, and the quality and correct sizing of these fittings directly determines whether a high-performance fluid system remains leak-free under the pressure, temperature, and vibration conditions that race and street performance environments produce. The AN fitting standard, derived from military Aircraft-Navy specifications, provides a consistent thread and flare geometry across fuel, oil, and hydraulic applications that allows interchangeability between brands and simplifies system design by providing a known thread engagement and sealing approach for every connection. Swivel fittings, bulkhead adapters, 45-degree and 90-degree elbow fittings, tee and union adapters, and reducer fittings allow performance builders to route lines through tight spaces and around obstacles while maintaining correct flow area without res...
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Radium Engineering Fuel System Parts
Shop Radium Engineering fuel system parts at Black Ops Auto Works for high-performance street builds, track cars, drag racing applications, forced induction setups, engine swaps, and custom fuel system upgrades. This collection includes Radium fuel rails, fuel pressure regulators, fuel surge tanks, fuel hangers, fuel pump systems, fuel pulse dampers, PTFE hose kits, AN fittings, fuel cell parts, dry break fillers, catch cans, PCV systems, plumbing kits, and fuel system accessories. Radium Engineering is trusted by performance enthusiasts, fabricators, tuners, and motorsport builders for precision fuel delivery, clean installation, and reliable performance under demanding conditions. Whether you are upgrading fuel flow, adding a surge tank, converting to top-feed fuel rails, building a return-style fuel system, or improving crankcase ventilation with a catch can setup, Black Ops Auto Works carries Radium Engineering parts for serious performance builds. Shop Radium Engineering Parts ...
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