


Radium Engineering 6AN Male to 3/8" Spring Lock Male Fitting
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Description
Radium 6AN Male to 3/8" Spring Lock Male Fitting
Application: Spring lock (Spring-Lock coupler) fuel lines with a 3/8" female spring lock end
Part Type: Spring lock to AN adapter fitting
Part Number: 20-1766
The Radium 20-1766 converts a 3/8" female spring lock line to a 6AN male fitting, so an OEM spring lock hard line can be connected to AN hose. Spring-Lock couplers are used on many vehicle hard lines, including Ford, GM, Chrysler, Toyota, Honda and Nissan.
The fitting is machined from 6061 aluminium and anodised for corrosion resistance. Integrated FKM O-rings make it compatible with gasoline and alcohol fuels such as E85.
Key Features
- Conversion: 3/8" female spring lock line to 6AN male
- Billet: Machined 6061 aluminium, anodised for corrosion resistance
- FKM O-Rings: Integrated O-rings compatible with gasoline and E85
- Positive Lock: Clicks into the female spring lock fitting
Optional Parts
- Radium 8AN Male to 1/2" Spring Lock Male Fitting (20-1767) – 1/2in version – converts a 1/2in female spring lock line to 8AN male
- Radium 6AN Male to 3/8" Spring Lock Female Fitting (14-0766) – female version – converts a 3/8in male spring lock line to 6AN male
Important Notes
- Lubricate the male fitting O-rings well, insert into the female fitting until it clicks, then tug the connection to confirm it is locked
- A Spring-Lock disconnect tool is required to separate the fittings: slide the tool along the female fitting, push it into the male fitting and hold it while pulling the fittings apart
- Radium does not list fitment for this specific part number – confirm the spring lock size of your line before ordering
Vehicle Fitment
- Spring lock fuel lines with a 3/8" female end – Radium lists spring lock fuel lines on Ford Bronco, E-Series, Explorer, F-Series, Mustang, Thunderbird and Lightning plus Mercury, Lincoln and Panoz models (approx. 1986-2002)
If you're unsure whether this will fit your vehicle, contact our team of experts via email at hello@iilumolab.com and send through a few photos of the car for us to verify fitment.
Installation
We always recommend professional fitment for guaranteed satisfaction. If you're wanting a hassle-free installation, feel free to contact our friendly team as we offer installation services in-store at our Melbourne workshop. For more details, contact us here.
Note
Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.

