Radium Engineering Fuel Level Switch with Diagnostic LED Indicator Universal 1/8" NPT

Radium Fuel Level Switch Plus Diagnostic Indicator

Radium Engineering builds components trusted in serious motorsport and custom fuel system applications worldwide. The Radium Fuel Level Switch Plus Diagnostic Indicator (20-0519) delivers reliable low-fuel switching with a built-in LED that makes troubleshooting and confirming switch operation straightforward — no guesswork required.

This listing covers the universal Radium 20-0519 fuel level switch, suitable for any fuel system requiring level monitoring including custom fuel cells, surge tanks, and baffled sumps. Compatible with petrol, E85, and alternative fuels.

Important: This switch must be installed inside the fuel container. A 1/8" NPT threaded port is required for fitment. Always apply PTFE thread sealant paste to the tapered pipe threads before installation.

Key Features

• 1/8" NPT threaded body for universal fitment
• Integrated LED diagnostic indicator for visual confirmation of switch operation
• Stainless steel construction for corrosion resistance
• Compatible with petrol, E85, and alternative fuels
• Reversible polarity — remove the E-clip and flip the float to suit your application
• 610 mm (24 in) flying leads, 20AWG, for straightforward wiring
• Switched signal output suitable for dashboard warning lights or ECU inputs

Compatibility details and installation notes are provided in the tabs above. Please confirm your fuel system configuration and thread sizing before ordering.

Not sure if this switch suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.