{"product_id":"100tech-23ft-fuel-gauge-sending-unit-240-33-ohm-smooth-readings-in","title":"100TECH 23ft Fuel Gauge Sending Unit 240-33 ohm - Smooth Readings in","description":"\u003cp\u003eIn this review of the 100TECH 23' (585mm) fuel gauge sending unit, the bottom line is simple: it is best for boat and RV owners who want a rugged, low-maintenance replacement that reduces slosh and delivers smoother level readings. The reviewer found the sender's reed-switch magnetic design and absence of a swing arm make it notably more stable in chop, and its 316 stainless steel construction promises long service life in marine environments. Installation is straightforward and the unit is intended to match non-linear 240-33 ohm gauges.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReed switch magnetic design:\u003c\/strong\u003e Eliminates a swing-arm float to reduce slosh fluctuations and provide steadier readings in rough water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e316 stainless steel body:\u003c\/strong\u003e Provides corrosion resistance and durability for long-term marine use compared with lower grade metals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-linear 240-33 ohm output:\u003c\/strong\u003e Uses a standard American output that reads 240 ohms at empty and 33 ohms at full for compatible gauges.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll mounting hardware included:\u003c\/strong\u003e Ships with an NBR gasket and five SUS 316 M5 screws so the unit seals and mounts with minimal extra parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy installation:\u003c\/strong\u003e SAE 5-hole mounting pattern and clear wiring instructions make it possible to install the sender in about 15 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFloatless operation:\u003c\/strong\u003e No arm to break and no moving parts exposed to tank debris, which reduces failure points over time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe 100TECH sending unit is ideal for small boat and RV owners who need a reliable replacement for a swing-arm sender and who have a gauge that accepts a non-linear 240-33 ohm signal. It suits users who value corrosion resistance and want a unit that tolerates rough water without constant fluctuations.\u003c\/p\u003e\n\u003cp\u003eIt is less suitable for setups that require a linear output or gauges designed for a different resistance range; those users should verify gauge compatibility or seek a sender with the correct output curve. Also, if tank depth differs from the product length options, contact the seller for alternate lengths before buying.\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\u003eStable readings in chop due to the reed switch magnetic design and absence of a swing arm.\u003c\/li\u003e\n\u003cli\u003eDurable 316 stainless steel construction resists corrosion in marine environments.\u003c\/li\u003e\n\u003cli\u003eComplete mounting kit and clear instructions make installation quick and straightforward.\u003c\/li\u003e\n\u003cli\u003eFloat diameter and recommended hole size are specified, easing retrofit work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNon-linear 240-33 ohm output means it only matches gauges designed for that signal type.\u003c\/li\u003e\n\u003cli\u003eSome users report mixed accuracy compared with other sender types, so calibration checks are recommended after installation.\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\u003eLength\u003c\/td\u003e\n\u003ctd\u003e23' (585mm)\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\u003eBody material\u003c\/td\u003e\n\u003ctd\u003e316 stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting pattern\u003c\/td\u003e\n\u003ctd\u003eSAE 5-hole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncludes\u003c\/td\u003e\n\u003ctd\u003eNBR gasket and 5x SUS 316 M5 screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 100TECH 23' fuel gauge sending unit is a practical, value-minded replacement for owners seeking steadier fuel readings in boats and RVs. Its \u003cstrong\u003e316 stainless steel\u003c\/strong\u003e construction and reed-switch design reduce service visits and slosh-related fluctuations, making it a sensible buy when paired with a compatible 240-33 ohm gauge.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this sender fit my tank?\u003c\/strong\u003e\u003cbr\u003eMeasure tank depth and choose a sender length 1' shorter than the tank depth; contact the seller for other length options if needed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat gauge does it work with?\u003c\/strong\u003e\u003cbr\u003eIt works with gauges that accept a non-linear 240-33 ohm output (240 ohm at empty, 33 ohm at full).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the unit corrosion resistant?\u003c\/strong\u003e\u003cbr\u003eYes, the body is made from 316 stainless steel for improved corrosion resistance in marine environments.\u003c\/p\u003e","brand":"100TECH","offers":[{"title":"Default Title","offer_id":48606829478107,"sku":"B0BY5DMVFW","price":74.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/51H8RjEgWGL._AC_SL1001.jpg?v=1778501774","url":"https:\/\/gearmusthave.com\/products\/100tech-23ft-fuel-gauge-sending-unit-240-33-ohm-smooth-readings-in","provider":"GearMustHave","version":"1.0","type":"link"}