Why Choose 100TECH Fuel Sender?
✅ [Finer Resolution] The Short Tank Requires Higher Sensitivity Than The Taller Tanks Do. The Resolution For the 4", 5", 5.5", 6", 7", 7.5" Of 100TECH Fuel Level Sending Unit is 10mm. They Will Provide Continuous Fuel Level Than 21mm ones do.
✅ Premium OKI Reed Switch — Made in Japan
Unlike cheap resistive film senders, our OKI reed switch technology delivers smooth, accurate readings with minimal mechanical wear — built to last for years of reliable service.
✅ Marine-Grade 316 Stainless Steel
The stem, flange, and mounting screws are crafted from SUS 316 stainless steel — the gold standard for corrosion resistance in saltwater, diesel, and harsh outdoor environments. NBR gasket for a reliable, leak-free seal.
✅ Universal Fit — SAE 5-Hole Standard
Designed to drop right in as a direct replacement for OEM arm-type senders and Wema units. No drilling, no adapters — just a clean, secure fit every time.
✅ Wide Application
Compatible with fuel, diesel, gasoline, and water tanks across boats, RVs, trucks, generators, and industrial equipment.
✅ Everything Included
Each unit ships with an NBR gasket, 5 mounting screws, and a well-illustrated installation guide — ready to install in about 15 minutes.
✅ IP67 Waterproof Protection
Fully sealed against dust and water immersion, so it performs reliably even in the most demanding marine and off-road conditions.
It Is Recommended To Bench-Test The Gauge And Sensor Together Prior To Installation.
Product Description
100TECH Stainless Steel Fuel tank Sending Unit is Made With OKI Reed Switch(Imported from Japan). It's Easy to Install. A Perfect Match with All the Screw Holes Lining up the Unit Comes with 5pcs of Screws and 1pc of New Neoprene Gasket. It is the Direct Replacement for Arm Type Sensors or Original Wema Unit for Better Durability and Reliability The Substantial Flange can Seal the Tank Completely
The 100TECH Marine Fuel Sending Units are Widely Used in Marine, On-road, Off-road, Generator set, and Industrial Applications. The Electric Liquid Level Sending Unit Utilizes Reed Switch and Magnetic Field technology. In 100TECH Reed Switch Level Senders the Float is the Only Moving Part of the Sender, Thereby Minimizing Potential Mechanical Failures
Material:Body: SUS 316 Stainless Steel
Cable: PVC
Float: NBR
Mounting Methods: Standard SAE 5 hole pattern
Protection Rank: IP67
Output Signal: American Standard 240-33 ohms (240 ohms at empty , 33 ohms at full)
Resolution Range:
10mm: 4”,5”,6”,7”
21mm: 8”,8.5”,9”,9.5”,10”,10.5”,11”,11.5”,12”,12.5”,13”,13.5”,14”,15”,16”,
17”,18”,19”,20”,21”,22”,23”24”,25”,26”,27”,28”,29”,30”,31”,32”
Operational Temperature: -40°F to +85°F (-40°C to +85°C)
Package Information:
1 x 100TECH Fuel Sending Unit 1 x Gasket 5 x M5*0.8 Length(16mm) Screws 1x Sending Unit Installation Guide Note: 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
About this item
[100TECH Fuel Sending Unit Features and Benefits] Made With OKI Reed Switch(Imported from Japan). SS Construction,SAE 5 hole Mounting Pattern, It's The Direct Replacement for OEM's Arm-Type Fuel Sender. The Advantage of This Sending Unit Over Thick-Film Swim Arm Type Level Sender is the Reed Switch's Durability and Reliability.
[It Includes Everything You Need in the Package, Easy and Simple to Install] The Fuel Level Sensor Comes with 1pc of Cork Gasket,5pcs of Mounting Screws,Well-Written and Illustrated instructions. Take about 15 Minutes to Intstall Total, No More Gas Fumes!
Wide Application: For Use in Diesel, Fuel, Gasoline, Water, OEM Replacement. It Could Support Fuel Level Gauge and Water Level Gauge for Boat/Auto.
SIGNAL OUTPUT: 240-33 ohms (240 ohms at empty, 33 ohms at full，Non-Linear Output). If you Need Lengths Other than 4"-32", Please Contact us Directly for More Information.
[Attention:] 1)To Allow the Fuel Sender not Hit the Bottom of the Tank, Please Measure from the Top of Your Tank to the Bottom on the Outside and Subtract 1 Inch the Length of Sender. 2)[The Size of Float] The Diameter of Float is 1.38"(35mm). If You Have to Drill the hole, Diameter 1.50"(38mm) Hole Would be Perfect.