{"product_id":"radium-engineering-fuel-level-switch-1-8-npt-universal-20-0461","title":"Radium Engineering Fuel Level Switch - 1\/8 NPT | Universal (20-0461)","description":"\u003cp\u003e\u003cstrong\u003eThe first warning of fuel starvation should come from a switch, not a misfire.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSurge tanks and fuel cells run low silently until the engine notices, and by then the lean event is already underway. The \u003cstrong\u003eRadium Engineering Fuel Level Switch and Diagnostic Indicator\u003c\/strong\u003e puts a sensor inside the container: the 20-0461 is a corrosion resistant stainless steel 1\/8\" NPT level switch compatible with all fuel types, installed inside Radium Multi-Pump Fuel Surge Tanks (MPFST) and Fuel Cell Surge Tanks (FCST) through their machined \"Level Switch\" ports. When fuel drops, the switched signal can drive a dash indicator or a programmable ECU input for safety strategies. Add the 20-0508 LED diagnostic indicator for a visual reference, or take the 20-0519 kit combining both.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAdvance warning of low fuel level before starvation reaches the engine\u003c\/li\u003e\n\u003cli\u003eAn ECU-ready safety input for strategies like power reduction or alarm triggers\u003c\/li\u003e\n\u003cli\u003eA simple LED reference for diagnosing fueling issues during setup and testing\u003c\/li\u003e\n\u003cli\u003eCorrosion-proof stainless construction living happily in gasoline, E85, or methanol\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e20-0461: 1\/8\" NPT fuel level switch, corrosion resistant stainless steel, compatible with all fuel types\u003c\/li\u003e\n\u003cli\u003eInstalls inside Radium MPFST and FCST containers via their machined \"Level Switch\" ports\u003c\/li\u003e\n\u003cli\u003eSwitched signal output for dash indicators or programmable ECU inputs\u003c\/li\u003e\n\u003cli\u003e20-0508: LED diagnostic indicator wired directly to the level switch signal; soldering required, and a 2AN ORB (5\/16\"-24) threaded port is required for installation\u003c\/li\u003e\n\u003cli\u003e20-0519: combination kit including both the 20-0461 switch and 20-0508 indicator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eCompatibility is the first gate: Radium states this switch works only with the MPFST and FCST product families, which carry the dedicated, labeled level switch ports the sensor threads into. Once installed, the switch's output is just a clean signal when level drops, and what you do with it is up to the build: a warning light on the dash, a logged channel, or an ECU safety input that pulls timing or boost when the surge supply runs low. The 20-0508 indicator is the simplest consumer of that signal, an LED that lights when the switch triggers. Radium is candid that it is often not practical to watch while driving, but as a diagnostic reference during setup, testing, and troubleshooting it answers the \"is the surge tank actually staying full\" question directly. Two installation notes for the indicator: soldering is required for the 20-0508 kit, and if stacking the indicator on top of the level switch, the panel thickness must be at least 0.75\".\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e20-0461: 1x stainless 1\/8\" NPT fuel level switch\u003c\/li\u003e\n\u003cli\u003e20-0508: LED diagnostic indicator kit (soldering required)\u003c\/li\u003e\n\u003cli\u003e20-0519: both the 20-0461 switch and 20-0508 indicator in one kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRadium Multi-Pump Fuel Surge Tanks (MPFST) and Fuel Cell Surge Tanks (FCST) with labeled level switch ports\u003c\/li\u003e\n\u003cli\u003eDash warning indicators and programmable ECU safety inputs\u003c\/li\u003e\n\u003cli\u003eAll fuel types including gasoline, E85, and methanol\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Fuel Level Switch - 1\/8NPT","offer_id":43672697012291,"sku":"20-0461","price":85.45,"currency_code":"USD","in_stock":true},{"title":"Fuel Level Diagnostic Indicator","offer_id":43672697045059,"sku":"20-0508","price":28.45,"currency_code":"USD","in_stock":true},{"title":"Fuel Level Switch \u0026 Diagnostic Indicator","offer_id":43672697077827,"sku":"20-0519","price":104.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0461-29454193164358_fc189e49-7573-495d-bd14-b5484167d2b1.jpg?v=1786717171","url":"https:\/\/www.tunedbyshawn.com\/products\/radium-engineering-fuel-level-switch-1-8-npt-universal-20-0461","provider":"Tuned by Shawn","version":"1.0","type":"link"}