---
product_id: 420041600
title: "100TechMarine Fuel Sending Unit Float Replacement 21\"(530mm) for Boat Vehicle RV Fuel Sender Gas Tank Sending Unit Diesel Level Sending Unit Water Level Sensor Fuel Gauge Sending Unit 240-33 ohms"
brand: "100tech"
price: "50081 som"
currency: KGS
in_stock: true
reviews_count: 3
url: https://www.desertcart.kg/products/420041600-100techmarine-fuel-sending-unit-float-replacement-21-530mm-for-boat
store_origin: KG
region: Kyrgyzstan
---

# 21" length 240-33 ohms 316 stainless steel 100TechMarine Fuel Sending Unit Float Replacement 21"(530mm) for Boat Vehicle RV Fuel Sender Gas Tank Sending Unit Diesel Level Sending Unit Water Level Sensor Fuel Gauge Sending Unit 240-33 ohms

**Brand:** 100tech
**Price:** 50081 som
**Availability:** ✅ In Stock

## Summary

> 🚤 Navigate with Confidence!

## Quick Answers

- **What is this?** 100TechMarine Fuel Sending Unit Float Replacement 21"(530mm) for Boat Vehicle RV Fuel Sender Gas Tank Sending Unit Diesel Level Sending Unit Water Level Sensor Fuel Gauge Sending Unit 240-33 ohms by 100tech
- **How much does it cost?** 50081 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/420041600-100techmarine-fuel-sending-unit-float-replacement-21-530mm-for-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

- • **Easy Installation:** Designed with a SAE 5 hole mounting pattern for a hassle-free setup.
- • **Rugged Durability:** Crafted from heavy-duty 316 stainless steel, built to withstand the toughest marine and automotive environments.
- • **Lightweight Design:** Weighing only 363g, it won’t weigh you down while providing essential functionality.
- • **Precision Measurement:** Experience accurate fuel and water level readings with a standard output of 240-33 ohms.
- • **Versatile Applications:** Perfectly suited for boats, vehicles, and RVs, ensuring you’re always in the know about your fuel levels.

## Overview

The 100TechMarine Fuel Sending Unit Float Replacement is a 21-inch sensor designed for accurate fuel and water level readings in marine and automotive applications. Made from heavy-duty 316 stainless steel, it features a standard output of 240-33 ohms and is easy to install with a SAE 5 hole mounting pattern.

## Description

100TechMarine Fuel Sending Unit Float Replacement 21"(530mm) for Boat Vehicle RV Fuel Sender Gas Tank Sending Unit Diesel Level Sending Unit Water Level Sensor Fuel Gauge Sending Unit 240-33 ohms

## Features

- The Fule/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.
- SAE 5 hole Mounting Pattern, Heavy Duty 316 Stainless Steel and Rugged Construction. Wide Application: It Could Support Fuel Level Gauge and Water Level Gauge for Boat/Auto.
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | 100TECH direct |
| Part number | 21C5-BY530 |
| Item Weight | 363 g |
| Package Dimensions | 56.39 x 10.16 x 6.02 cm; 363 g |
| Item model number | 21C5-BY530 |
| Size | 21" |
| Colour | 240-33 ohms |
| Style | Industrial |
| Material | Stainless Steel |
| Plug profile | Surface Mount |
| Switch style | Float Switch |
| Specification met | sae |
| Specific uses | marine, automotive |
| Batteries included? | No |
| Batteries Required? | No |

## Images

![100TechMarine Fuel Sending Unit Float Replacement 21"(530mm) for Boat Vehicle RV Fuel Sender Gas Tank Sending Unit Diesel Level Sending Unit Water Level Sensor Fuel Gauge Sending Unit 240-33 ohms - Image 1](https://m.media-amazon.com/images/I/51vZF89ZMQS.jpg)
![100TechMarine Fuel Sending Unit Float Replacement 21"(530mm) for Boat Vehicle RV Fuel Sender Gas Tank Sending Unit Diesel Level Sending Unit Water Level Sensor Fuel Gauge Sending Unit 240-33 ohms - Image 2](https://m.media-amazon.com/images/I/41Rux-7xM+L.jpg)
![100TechMarine Fuel Sending Unit Float Replacement 21"(530mm) for Boat Vehicle RV Fuel Sender Gas Tank Sending Unit Diesel Level Sending Unit Water Level Sensor Fuel Gauge Sending Unit 240-33 ohms - Image 3](https://m.media-amazon.com/images/I/61FvS+FnTJL.jpg)
![100TechMarine Fuel Sending Unit Float Replacement 21"(530mm) for Boat Vehicle RV Fuel Sender Gas Tank Sending Unit Diesel Level Sending Unit Water Level Sensor Fuel Gauge Sending Unit 240-33 ohms - Image 4](https://m.media-amazon.com/images/I/71ZIXEII7HL.jpg)
![100TechMarine Fuel Sending Unit Float Replacement 21"(530mm) for Boat Vehicle RV Fuel Sender Gas Tank Sending Unit Diesel Level Sending Unit Water Level Sensor Fuel Gauge Sending Unit 240-33 ohms - Image 5](https://m.media-amazon.com/images/I/61AJfE53lhL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    21” fuel tank sender
  

*by J***R on Reviewed in the United States on 25 May 2024*

Unfortunately it was too long for my application, had to send back.

### ⭐⭐⭐⭐⭐ 







  
  
    Product and service
  

*by B***S on Reviewed in the United States on 22 March 2023*

I ordered this almost a year ago for a custom build I was working on and just now got to connecting with a gauge.  I found myself with a reading issue and I reached out for help.  The company was SUPER helpful, they were willing to replace the product outside of the written warranty but were more about helping me through the problem.  They communicated daily with pictures and ultimately found a mistake I made that corrected the problem.  I am very impressed and appreciate the effort.  Highly recommend.

### ⭐⭐⭐⭐⭐ 







  
  
    Perfect replacement.
  

*by P***V on Reviewed in the United States on 9 June 2023*

If t exactly in the mount of the old sensor.  Works perfectly.

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**Shop now:** [https://www.desertcart.kg/products/420041600-100techmarine-fuel-sending-unit-float-replacement-21-530mm-for-boat](https://www.desertcart.kg/products/420041600-100techmarine-fuel-sending-unit-float-replacement-21-530mm-for-boat)

---

*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-03-19*