---
product_id: 14037043
title: "US Merchant Mr Heater Replacement Thermocouple 12-1/2\" Length Replaces Part no. F273117 by Fixitshop"
brand: "fixitshop"
price: "KSh4105"
currency: KES
in_stock: true
reviews_count: 8
url: https://www.desertcart.co.ke/products/14037043-us-merchant-mr-heater-replacement-thermocouple-12-1-2-length
store_origin: KE
region: Kenya
---

# 30mV Output Brass & Copper Fits Mr Heater US Merchant Mr Heater Replacement Thermocouple 12-1/2" Length Replaces Part no. F273117 by Fixitshop

**Brand:** fixitshop
**Price:** KSh4105
**Availability:** ✅ In Stock

## Summary

> 🔥 Keep the Heat Flowing with Confidence! 🔥

## Quick Answers

- **What is this?** US Merchant Mr Heater Replacement Thermocouple 12-1/2" Length Replaces Part no. F273117 by Fixitshop by fixitshop
- **How much does it cost?** KSh4105 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/14037043-us-merchant-mr-heater-replacement-thermocouple-12-1-2-length)

## Best For

- fixitshop enthusiasts

## Why This Product

- Trusted fixitshop brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **📏 Perfect Fit:** Designed for most Mr Heater tank top models, check compatibility effortlessly.
- • **📦 Compact Design:** Lightweight at just 0.634 ounces, easy to handle and install.
- • **🛡️ Safety First:** Prevents unburned propane release, ensuring peace of mind.
- • **🔄 Seamless Replacement:** Easily replaces Mr Heater F273117 for hassle-free installation.
- • **🔋 Reliable Performance:** Delivers a consistent 30 millivolt output for optimal safety.

## Overview

The US Merchant Mr Heater Replacement Thermocouple by Fixitshop is a high-quality, 12-1/2" thermocouple designed to replace part number F273117. Made from durable brass and copper, it ensures reliable performance with a 30 millivolt output, making it an essential safety component for Mr Heater tank top models.

## Description

US Merchant Mr Heater Replacement Thermocouple 12-1/2" Length Replaces Part no. F273117 by Fixitshop

## Features

- THERMOCOUPLE REPLACES PART NUMBER Mr Heater F273117
- 12-1/2" REPLACEMENT THERMOCOUPLE FOR MOST MR HEATER TANK TOP MODELS
- For use with f273116 safety valve
- 30 millivolt output
- ******Check parts manual for part number*******

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Fixitshop |
| Material | Brass, Copper |
| Style | Modern |
| Maximum Supply Voltage | 30 Millivolts |
| Output Type | Analog Voltage |
| Specific Uses For Product | Replacement part for Mr. Heater tank top heaters, preventing unburned propane release |
| Manufacturer | Fixitshop Corp. |
| Part Number | F273117 |
| Item Weight | 0.634 ounces |
| Package Dimensions | 3.94 x 2.95 x 0.98 inches |
| Item model number | OE100 |
| Is Discontinued By Manufacturer | No |
| Color | copper |
| Voltage | 30 Volts |
| Item Package Quantity | 1 |
| Measurement System | Imperial |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![US Merchant Mr Heater Replacement Thermocouple 12-1/2" Length Replaces Part no. F273117 by Fixitshop - Image 1](https://m.media-amazon.com/images/I/41zW8YdLxoL.jpg)

## Questions & Answers

**Q: What is the thread type and size of the end that screws into the gas valve?**
A: I do not know, but you can call or chat Mr. Heater and they can give you the correct part ##.   Have model # on hand also ser # as parts change with production runs.

**Q: Will this part fit the MH18b heater?**
A: No it does not.

**Q: Will it work in a LIttle Buddy heater?**
A: I would think so but not sure

**Q: Can someone tell me the size of the bolt on the bottom of the thermocoupler?**
A: Cory: There are two different threads on thermocouples: 8MM and 5/16.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Good fix for the price
  

*by K***R on Reviewed in the United States on February 10, 2024*

Works fine, good value.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Worked perfect on my (NOT Mr. Heater) propane fire table
  

*by M***E on Reviewed in the United States on June 3, 2022*

My fire table just stopped working one night while burning. Took it apart and found the brass tubing on the thermocouple had broken. Found this one that looked identical and on a whim ordered it. Fit and worked perfectly! Easy to install. I was up and running again within minutes of receiving the package. Couldn't be happier! There are no stickers/placards on my table to identify the brand. It was purchased at Lowe's 5-6 years ago.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Great for gas fire pit
  

*by D***M on Reviewed in the United States on April 27, 2024*

I had trouble with a gas fire pit that refused to stay lit. This was the fix. Just make sure that you choose the correct length for your application!

---

## 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.co.ke/products/14037043-us-merchant-mr-heater-replacement-thermocouple-12-1-2-length](https://www.desertcart.co.ke/products/14037043-us-merchant-mr-heater-replacement-thermocouple-12-1-2-length)

---

*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-02-24*