{"product_id":"marine-fuel-sending-unit-240-33-ohms-6-5ft-durable-reed-switch","title":"Marine Fuel Sending Unit 240-33 ohms 6.5ft - Durable Reed Switch","description":"\u003cp\u003eIn this review of the Marine Fuel Sending Unit, the bottom line is simple: this sender is for boat, truck or RV owners who need a rugged, reliable replacement for a failing swing-arm sender. The biggest reason to buy is the doughnut float with a reed switch design, which eliminates fragile moving parts and improves long-term durability and signal stability. Installation is straightforward and the sender pairs with standard non-linear gauges, making it a practical choice for anyone restoring or upgrading a fuel or water level gauge system.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable reed switch:\u003c\/strong\u003e The reed switch design reduces wear because there are no sliding contacts, providing more reliable operation than a swim arm sender.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiner resolution:\u003c\/strong\u003e The 6.5' unit offers a 10mm resolution, giving smoother, more continuous level readings in shorter tanks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRugged construction:\u003c\/strong\u003e The body uses SUS 316 stainless steel and a heavy duty mounting pattern for corrosion resistance in marine environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard output:\u003c\/strong\u003e Signal output of 240 ohms to 33 ohms ensures compatibility with standard non-linear fuel gauges designed for that range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete kit:\u003c\/strong\u003e The sender ships with a gasket, mounting screws and illustrated wiring instructions to simplify installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFloat diameter and fit guidance:\u003c\/strong\u003e The float is 1.38 in (35mm) and a 1-1\/2 in (38mm) hole is recommended if drilling is required.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis sending unit is aimed at owners of boats, campers, trucks or cars who want a long-lasting replacement for a worn-out swingarm sender and who already have, or plan to use, a gauge that accepts a non-linear 240-33 ohm signal. It is especially relevant for shorter tanks where finer resolution matters and for marine environments where corrosion resistance is important.\u003c\/p\u003e\u003cp\u003eIt is not the best choice for users who require a strictly linear output gauge or for those whose tank depth would be too short for the 6.5' length; note the sender should be about 1 in shorter than a plastic tank depth or 0.5 in shorter for metal tanks to avoid bottom contact.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSolid, corrosion-resistant materials and a stainless SUS 316 body improve longevity in marine use.\u003c\/li\u003e\n\u003cli\u003eReed switch design with no sliding parts reduces failure points and improves reliability.\u003c\/li\u003e\n\u003cli\u003eEasy installation with included gasket, screws and clear wiring instructions saves time.\u003c\/li\u003e\n\u003cli\u003eHigher resolution for the 6.5' length produces smoother readings in short tanks.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eNon-linear output requires a compatible gauge; it will not match linear-signal gauges.\u003c\/li\u003e\n\u003cli\u003eSome users report mixed fit with mounting screw alignment, so minor adjustment or re-drilling may be needed.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAODITECK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eDoughnut float reed switch sending unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal output\u003c\/td\u003e\n\u003ctd\u003e240 ohms - 33 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e6.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFloat diameter\u003c\/td\u003e\n\u003ctd\u003e1.38 in (35 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eSAE 5-hole pattern, includes gasket and screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe AODITECK Marine Fuel Sending Unit is a solid, value-driven replacement for users who need a reliable non-linear sender with improved durability. Its reed switch design, SUS 316 construction and finer 10 mm resolution make it well suited to boats, RVs and trucks that use compatible gauges, and the included hardware and instructions make installation quick. For those with incompatible linear gauges or exacting mounting hole fit needs, check fitment before ordering.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWill this sender work with my fuel gauge?\u003c\/strong\u003e\u003cbr\u003eIt will work with gauges designed for a non-linear 240-33 ohm signal; confirm your gauge accepts that range before installing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow deep can the tank be for this 6.5 in unit?\u003c\/strong\u003e\u003cbr\u003eThe sender should be about 1 in shorter than a plastic tank depth or 0.5 in shorter than a metal tank to avoid the float hitting the bottom.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs installation difficult?\u003c\/strong\u003e\u003cbr\u003eInstallation is generally straightforward and takes about 15 minutes using the included gasket, screws and wiring diagram, though some users may need to adjust mounting screw alignment.\u003c\/p\u003e","brand":"AODITECK","offers":[{"title":"Default Title","offer_id":48167824064731,"sku":"B09126N2DH","price":45.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61VD0MTydhS._AC_SL1500_66281396-c334-4a6e-a2bf-0673a56bb41b.jpg?v=1769177362","url":"https:\/\/gearmusthave.com\/products\/marine-fuel-sending-unit-240-33-ohms-6-5ft-durable-reed-switch","provider":"GearMustHave","version":"1.0","type":"link"}