--- product_id: 14037043 title: "US Merchant Mr Heater Replacement Thermocouple 12-1/2\" Length Replaces Part no. F273117 by Fixitshop" brand: "fixitshop" price: "87.22 DT" currency: TND in_stock: true reviews_count: 8 url: https://www.desertcart.tn/products/14037043-us-merchant-mr-heater-replacement-thermocouple-12-1-2-length store_origin: TN region: Tunisia --- # 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:** 87.22 DT **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?** 87.22 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/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.tn/products/14037043-us-merchant-mr-heater-replacement-thermocouple-12-1-2-length](https://www.desertcart.tn/products/14037043-us-merchant-mr-heater-replacement-thermocouple-12-1-2-length) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-09*