--- product_id: 527070577 title: "100TECH 20\"(510mm) Marine Fuel Sending Unit Float Replacement for Boat Vehicle RV Fuel Sender Gas Tank Sending Unit Diesel Level Sending Unit Water Level Sensor Fuel Gauge Sending Unit 240-33 ohm" brand: "100tech" price: "€ 5.60" currency: EUR in_stock: false reviews_count: 2 url: https://www.desertcart.gr/products/527070577-100tech-20-510mm-marine-fuel-sending-unit-float-replacement-boat store_origin: GR region: Greece --- # 316 Stainless Steel Durability Precision 240-33 Ohm Output 15-Minute Easy Installation 100TECH 20"(510mm) Marine Fuel Sending Unit Float Replacement for Boat Vehicle RV Fuel Sender Gas Tank Sending Unit Diesel Level Sending Unit Water Level Sensor Fuel Gauge Sending Unit 240-33 ohm **Brand:** 100tech **Price:** € 5.60 **Availability:** ❌ Out of Stock ## Summary > ⚓ Navigate Fuel Levels with Precision & Confidence! ## Quick Answers - **What is this?** 100TECH 20"(510mm) Marine Fuel Sending Unit Float Replacement for Boat Vehicle RV Fuel Sender Gas Tank Sending Unit Diesel Level Sending Unit Water Level Sensor Fuel Gauge Sending Unit 240-33 ohm by 100tech - **How much does it cost?** € 5.60 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/527070577-100tech-20-510mm-marine-fuel-sending-unit-float-replacement-boat) ## Best For - 100tech enthusiasts ## Why This Product - Trusted 100tech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Installation:** Comes complete with gasket, mounting screws, and clear instructions—get it installed in just 15 minutes. - • **Marine-Grade Durability:** Crafted from corrosion-resistant 316 stainless steel for unmatched longevity in harsh marine environments. - • **Optimized for Rough Waters:** Direct replacement for swingarm senders reduces fuel level fluctuations even in choppy conditions. - • **No Moving Parts, No Failures:** Magnetic reed switch design eliminates mechanical wear, ensuring reliable performance without breakdowns. - • **Precision Fuel Level Accuracy:** Advanced reed switch technology delivers smooth, slosh-free readings with a precise 240-33 ohm output curve. ## Overview The 100TECH 20" Marine Fuel Sending Unit is a rugged, high-precision fuel level sensor designed for boats, RVs, and diesel tanks. Featuring a corrosion-resistant 316 stainless steel body and advanced reed switch technology, it delivers smooth, accurate readings without mechanical wear. Easy to install with all necessary hardware included, this unit ensures reliable fuel monitoring even in rough waters, making it the smart upgrade for marine and vehicle fuel systems. ## Description 100TECH Reed Switch Fuel Sending Unit is Designed For the One Who Are looking for A Simple Solution To Measure The Amount of Fuel/Gasoline Level In The Tank. There are So many different Senders on desertcart, What’s The Features and Benefits of 100TECH’s Sending Units ? 1. 100TECH Fuel Sender is Made With OKI Reed Switch(Imported from Japan),More Reliable and Durable. 2. The Resolution of 100TECH 4”,5”,5.5”,6”,7”,7.5 Marine Fuel Sending Unit is 10mm. 3. The Rod, Cork Gasket and Mounting Screws of 100TECH Fuel Tank Sending Unit is Made From 316 Stainless Steel to Ensure Reliable Performance And Long Service Life. OThers: 1. The Resolution of Sender 4”,5”,5.5”,6”,7”,7.5 Is 21mm. Lack of Resolution,The Dropping To Empty Is Very Steep, The Tank Looks 1/4 Full When It Is About At 1/8. 2. The Body of Sender is Made with 304 Stainless Steel. 304 rusts Faster As It Has Less Nickel And No Molybdenum. Operational Temperature: -40°F ~ +85°F (-40°C ~ +85°C). Additional Information : Package Information: 1 x 100TECH Fuel Sender 1 x Gasket 5 x M5*0.8 Length(16mm) Screws 1x Sending Unit Installation GuideNote: Please kindly pay Attention to the Product Description, Especially the Resolution and Length (the Length of Sender Should be 1" less than the Depth of the Tank if tank is Plastic, and 0.5" Less Than the Depth of the Tank if Tank is Metal) Before Placing the Order. Review: Almost perfect! Review: Accurate and supper easy to use. ## Features - [ Direct Replacement For Swingarm Sender, Smoother Readings When In Rougher Water] 100TECH Reed Switch Fuel Sender Unit is Designed Based on Magnetic Technology And Made With Series of High Quality Reed Switches & Fixed Resistors. It Does Not Require A Float On An Arm. Dramatically Reduces Slosh Fluctuations Over Swing-arm Units. No Moving Parts To Break,No Moving Parts To Break. It Moves Freely, Accurately Indicating The Fuel Level In the Tank. - ［Rugged Construction,Long Service Life］The Body of 100TECH Sender Are Made From 316 Stainless Steel. The Benefit of using 316 Stainless Steel Include Its Corrosion Resistance And Lasting Durability For Marine Applications. You May Pay A Little More Upfront, But In The Long Run, You'll Save Money Since You Won't Have To Replace Your Sender As Frequently. You Can't Tell The Difference By Simply Looking At It. However, 304 Rusts Faster As It Has Less Nickel And No Molybdenum. - The Fuel/Water Level Sensor with American standard output 240-33 ohms (240 ohms at empty, 33 ohms at full). If you Need Lengths Other than 4"-24", Please Contact us Directly for More Information. - ［Easy To Install,All Parts Included］SAE 5 hole Mounting Pattern. The Substantial Flange Can Seal The Tank Completely. The Fuel Sender Comes with 1pc of NBR Gasket(1pc), 5pcs of SUS 316 M5 Mounting ScrewsWell-written And Illustrated Instructions; The Wiring Instructions Are Straight Forward And Easy To Follow. Install Total In 15 Minutes! - ［Note］: ① To Allow The Sender Not Hit The Bottom Of The Tank, The Length Of Sender Should Be 1" Less Than The Depth Of The Tank. ②The Diameter of Float is 1.38"(35mm). If You Have to Drill the hole, Diameter 1-1/2"(38mm) Hole Would be Perfect.③100TECH Sender is with Non-Linear Output, It can only match with standard gauge with Non-Linear Signal. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BY5F3NZC | | Actuator Type | Reed Switch | | Brand | 100Tech | | Brand Name | 100Tech | | Circuit Type | 1-way | | Color | USAU395-45A291 | | Connectivity Protocol | X-10 | | Connector Type | Screws | | Connector type | Screws | | Contact Material | Stainless Steel | | Contact Type | Normally Open | | Contact type | Normally Open | | Control Method | App | | Controller Type | Push Button | | Current Rating | 33 Amps | | Current rating | 33 Amps | | Customer Reviews | 4.8 out of 5 stars 10 Reviews | | International Protection Rating | IP67 | | Manufacturer | 100Tech | | Material Type | Nickel,Stainless Steel | | Model | 20C5 | | Mounting Type | Panel Mount | | Number of Items | 1 | | Operating Voltage | 12 Volts (DC) | | Operating voltage | 12 Volts (DC) | | Operation Mode | ON-OFF" or "ON-NONE-OFF | | Operation mode | ON-OFF" or "ON-NONE-OFF | | Part Number | 20C5 | | Specification Met | Ip67, Ul Listed | | Switch Type | Float Switch | | Terminal | Screw | | UPC | 751501377688 | | Unit Count | 1.0 Count | | Upper Temperature Rating | 85 Degrees Fahrenheit | ## Product Details - **Connector type:** Screws - **Contact type:** Normally Open - **Current rating:** 33 Amps - **Operating voltage:** 12 Volts (DC) - **Operation mode:** ON-OFF" or "ON-NONE-OFF ## Images ![100TECH 20"(510mm) Marine Fuel Sending Unit Float Replacement for Boat Vehicle RV Fuel Sender Gas Tank Sending Unit Diesel Level Sending Unit Water Level Sensor Fuel Gauge Sending Unit 240-33 ohm - Image 1](https://m.media-amazon.com/images/I/51vZF89ZMQS.jpg) ![100TECH 20"(510mm) Marine Fuel Sending Unit Float Replacement for Boat Vehicle RV Fuel Sender Gas Tank Sending Unit Diesel Level Sending Unit Water Level Sensor Fuel Gauge Sending Unit 240-33 ohm - Image 2](https://m.media-amazon.com/images/I/61uL5++-7YL.jpg) ![100TECH 20"(510mm) Marine Fuel Sending Unit Float Replacement for Boat Vehicle RV Fuel Sender Gas Tank Sending Unit Diesel Level Sending Unit Water Level Sensor Fuel Gauge Sending Unit 240-33 ohm - Image 3](https://m.media-amazon.com/images/I/41r-WEx1giL.jpg) ![100TECH 20"(510mm) Marine Fuel Sending Unit Float Replacement for Boat Vehicle RV Fuel Sender Gas Tank Sending Unit Diesel Level Sending Unit Water Level Sensor Fuel Gauge Sending Unit 240-33 ohm - Image 4](https://m.media-amazon.com/images/I/61KFrM5vW+L.jpg) ![100TECH 20"(510mm) Marine Fuel Sending Unit Float Replacement for Boat Vehicle RV Fuel Sender Gas Tank Sending Unit Diesel Level Sending Unit Water Level Sensor Fuel Gauge Sending Unit 240-33 ohm - Image 5](https://m.media-amazon.com/images/I/81WCrsAXOLL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐ Almost perfect! *by J***E on 6 May 2023* ### ⭐⭐⭐⭐⭐ Accurate and supper easy to use. *by C***E on 7 November 2023* --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/527070577-100tech-20-510mm-marine-fuel-sending-unit-float-replacement-boat](https://www.desertcart.gr/products/527070577-100tech-20-510mm-marine-fuel-sending-unit-float-replacement-boat) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-05-08*