--- product_id: 6325148 title: "Derale 13021 -6AN x -6AN In-Line Fluid Thermostat" brand: "derale" price: "347.90 DT" currency: TND in_stock: true reviews_count: 8 category: "Derale" url: https://www.desertcart.tn/products/6325148-derale-13021-6an-x-6an-in-line-fluid-thermostat store_origin: TN region: Tunisia --- # -6AN inlet fittings 180°F preset activation Brass 3/8 inch barb included Derale 13021 -6AN x -6AN In-Line Fluid Thermostat **Brand:** derale **Price:** 347.90 DT **Availability:** ✅ In Stock ## Summary > 🌡️ Stay Cool, Stay Ahead: The Smart Thermostat Your System Deserves ## Quick Answers - **What is this?** Derale 13021 -6AN x -6AN In-Line Fluid Thermostat by derale - **How much does it cost?** 347.90 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/6325148-derale-13021-6an-x-6an-in-line-fluid-thermostat) ## Best For - derale enthusiasts ## Why This Product - Trusted derale brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable Build:** Machined exterior and brass barb fittings guarantee long-lasting performance under pressure. - • **Compact & Lightweight:** At just 1.6 ounces and 4.25 x 2.75 x 1.38 inches, it fits discreetly without bulk. - • **Universal Compatibility:** Standard -6AN inlet fittings ensure seamless integration with your existing system. - • **Precision Thermal Control:** Activates at 180°F and deactivates at 165°F for optimal fluid temperature management. - • **Plug-and-Play Installation:** Includes all necessary fittings for quick, hassle-free setup—get your system running faster. ## Overview The Derale 13021 In-Line Fluid Thermostat offers precise temperature control with a preset turn-on at 180°F and turn-off at 165°F. Featuring durable brass 3/8 inch barb fittings and standard -6AN inlets, this compact, machined thermostat ensures reliable, easy integration into your HVAC or fluid system for efficient thermal management. ## Description Derale 13021 -6AN x -6AN In-Line Fluid Thermostat Review: Exact fit. Quality. Came with everything I needed. - I needed this item to finish a transmission cooler with automatic fan project for my 2012 Tahoe. This works exactly as needeed - on at 180 degrees and off at 165 degrees. Keeps my transmission cool when I am towing. When not towing the trans temp is now less than 150 degrees. Never above 180 towing heavy loads. The cooler I installed is a DERALE # 13900 16 pass cooler. The -6 AN fittings with this kit exactly fit the AN fittings on my cooler. Review: Simple and effective - I installed this inline in the trans oil line on a large Hayden plate and fin cooler with a fan. The fan is switched to a relay via this thermostat. I have an MSD device that reads all the available sensor data, and trans temp is one of my selected options. The thermostat is supposed to come on at 180 degrees, and it actually comes on at about 183-185. This is surely because the sensor and the thermostat are at different points in the trans fluid, hence the difference in readout. This is a simple install, and it works as indicated. ## Features - 180 degree farenheit preset turn-on temperature - Turn-off temperature is preset at 165 degree farenheit - -6AN Inlets - Brass hose 3/8 inch barb fittings included ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Derale | | Brand | Derale | | Model | In-Line Fan Control -6AN | | Item Weight | 1.6 ounces | | Product Dimensions | 4.25 x 2.75 x 1.38 inches | | Item model number | 13021 | | Exterior | Machined | | Manufacturer Part Number | 13021 | | OEM Part Number | 13021 | | Mirror Adjustment | Button Control | | Special Features | Programmable, Auto-Scheduling | | Voltage | 230 Volts | | Wattage | 3.45E+3 | ## Images ![Derale 13021 -6AN x -6AN In-Line Fluid Thermostat - Image 1](https://m.media-amazon.com/images/I/51o64JZLSfL.jpg) ## Questions & Answers **Q: Can this be used with 11/32" hose?** A: I'm sure it could be used, you would have to get the correct adapter fittings though. On another note I would not recommend purchasing. I never installed because the sensor screws into the fitting and is the absolute smallest fitting I have ever seen. I was concerned a bug may hit it and cause it to break off. It appears very delicate and easily broken. **Q: How do you get the sensor to not leak? I have tried thread sealant and thread locker.** A: I use TEFLON tape, 3 passes. No leaks **Q: is this brass or something else? Do I get what is pictured? Derailed 13021? With 6an bard fittings?** A: The one I got was not brass. Aluminum or other alloy. **Q: Thread size?** A: That is the thread...-6 (roughly 3/8) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Exact fit. Quality. Came with everything I needed. *by M***E on October 8, 2024* I needed this item to finish a transmission cooler with automatic fan project for my 2012 Tahoe. This works exactly as needeed - on at 180 degrees and off at 165 degrees. Keeps my transmission cool when I am towing. When not towing the trans temp is now less than 150 degrees. Never above 180 towing heavy loads. The cooler I installed is a DERALE # 13900 16 pass cooler. The -6 AN fittings with this kit exactly fit the AN fittings on my cooler. ### ⭐⭐⭐⭐⭐ Simple and effective *by T***C on September 27, 2020* I installed this inline in the trans oil line on a large Hayden plate and fin cooler with a fan. The fan is switched to a relay via this thermostat. I have an MSD device that reads all the available sensor data, and trans temp is one of my selected options. The thermostat is supposed to come on at 180 degrees, and it actually comes on at about 183-185. This is surely because the sensor and the thermostat are at different points in the trans fluid, hence the difference in readout. This is a simple install, and it works as indicated. ### ⭐⭐⭐⭐⭐ Seems to work fine if you follow the instructions *by B***. on December 23, 2019* It says to use a dab of thread sealant on the sensor, I did and it's not leaking at all. It also says to use a relay for fans over a 10 amp draw, the hayden 526 cooler I used draws about 7-8 on startup, so I used a relay to be safe. --- ## 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/6325148-derale-13021-6an-x-6an-in-line-fluid-thermostat](https://www.desertcart.tn/products/6325148-derale-13021-6an-x-6an-in-line-fluid-thermostat) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-06*