{"product_id":"100tech-fuel-sending-unit-for-marine-boat-vehicle-truck-rv","title":"100TECH Fuel Sending Unit 240-33 ohms 14in - Durable Marine Sender","description":"\u003cp\u003eIn this review the 100TECH Fuel Sending Unit is evaluated for boat and vehicle owners needing a dependable replacement sender; the bottom line is simple: this stainless steel sensor is best for users who want reliability and a low-maintenance, direct-replacement option. The reviewer found the unit particularly compelling because it uses an OKI reed switch imported from Japan, which replaces fragile swim arm types and reduces moving parts that commonly fail, making it a strong choice for marine and RV fuel or water level monitoring.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable reed switch:\u003c\/strong\u003e The OKI reed switch provides greater longevity and resistance to wear compared with thick-film swim arm designs, reducing failure risk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard resistance output:\u003c\/strong\u003e The 240-33 ohm American standard output means the sender reads 240 ohm at empty and 33 ohm at full, allowing straightforward compatibility with many gauges.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless steel construction:\u003c\/strong\u003e Heavy duty 316 stainless steel and rugged construction resist corrosion in marine environments for longer service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy to install:\u003c\/strong\u003e The unit ships with a gasket, mounting screws, and illustrated instructions to simplify installation for DIYers and technicians alike.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSAE 5-hole mounting:\u003c\/strong\u003e The common mounting pattern fits many tanks and makes it a practical direct replacement for arm-type senders.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe 100TECH sender is aimed at boat owners, RV owners, and vehicle owners who need a straightforward replacement for an arm-type fuel or water level sender and who value durability over the lowest possible price. It is particularly suited to people who prefer a design with no moving electrical parts in the sensing element and who will benefit from the American standard 240-33 ohm output.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users who require an exact custom stem length outside the supplied range without contacting the manufacturer, or those whose original gauge uses a nonstandard resistance curve not compatible with 240-33 ohm output. For precision aftermarket gauge conversions, verify compatibility before purchase.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRobust build quality with 316 stainless steel and visible heli-arc welded joints reported by customers.\u003c\/li\u003e\n\u003cli\u003eReliable reed switch operation with no moving electrical parts to fail, improving long-term durability.\u003c\/li\u003e\n\u003cli\u003eClear installation package that includes gasket, screws, and illustrated wiring instructions to ease fitting.\u003c\/li\u003e\n\u003cli\u003eWorks well on common tanks, with customers noting accurate readings and a good fit for 50-gallon tanks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLimited to the American standard 240-33 ohm curve, which may not suit all legacy gauges without modification.\u003c\/li\u003e\n\u003cli\u003eAvailable lengths are fixed; customers needing uncommon lengths must contact the manufacturer for options.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003e100TECH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003ctd\u003e240-33 ohm (240 ohm empty, 33 ohm full)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStem length\u003c\/td\u003e\n\u003ctd\u003e14in (360mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFloat diameter\u003c\/td\u003e\n\u003ctd\u003e1.38in (35mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount pattern\u003c\/td\u003e\n\u003ctd\u003eSAE 5-hole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e316 stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 year limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 100TECH Fuel Sending Unit is a solid value for boat and RV owners who need a dependable direct-replacement sender with a durable reed switch and stainless construction. It delivers reliable readings, easy installation, and corrosion resistance, making it a sensible buy for most marine and vehicle fuel or water level applications when the 240-33 ohm output matches the existing gauge.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this sender fit my existing gauge?\u003c\/strong\u003e\u003cbr\u003eIt fits gauges that accept the American standard 240-33 ohm curve; verify your gauge uses that resistance range before swapping.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I drill the tank for this sender?\u003c\/strong\u003e\u003cbr\u003eYes; the float is 1.38in diameter and a 1.50in hole is recommended if drilling is required for installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this sender corrosion resistant?\u003c\/strong\u003e\u003cbr\u003eYes; the unit is made from heavy duty 316 stainless steel designed for marine environments and long-term use.\u003c\/p\u003e","brand":"100TECH","offers":[{"title":"Default Title","offer_id":48174331953371,"sku":"B092MV7Y8G","price":58.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51vZF89ZMQS._AC_SL1001_3500f62d-6acb-44d6-944b-026ebf248e70.jpg?v=1769209739","url":"https:\/\/gearmusthave.com\/products\/100tech-fuel-sending-unit-for-marine-boat-vehicle-truck-rv","provider":"GearMustHave","version":"1.0","type":"link"}