Best Coolant Level Sensors of 2026

The SMP TX111 Coolant Sensor is designed to help you monitor your vehicle's coolant level accurately. Made in China, this sensor ensures reliable quality and performance. Its compact size, with a height of 1.74 inches, length of 4.49 inches, and width of 2.61 inches, makes it easy to install and fit into your engine system without taking up much space. These dimensions also mean it won’t interfere with other components, providing you a hassle-free replacement experience. Overall, this sensor is a practical choice for anyone needing to keep their engine running smoothly by maintaining proper coolant levels.

This coolant level sensor from URO Parts is vehicle-specific and can also be used for windshield fluid level. It comes in a compact package and is lightweight, making it easy to install. Made in China.

The RecPro M21 Tank Monitor is a practical and user-friendly device for keeping track of your RV’s water and waste tank levels. It comes in black or white, allowing you to choose the color that best fits your RV’s interior style. The monitor features a clear, light-based display that makes it simple to see your tank levels at a glance, so you never have to guess. Once connected to your RV’s 12V electrical system, this monitor keeps an eye on your fresh water, gray water, and black water tanks, as well as your battery voltage, helping you stay informed and avoid any surprises while on the road.

Upgrade your Dodge RAMm with the JOJYFENG Coolant Reservoir Tank Level Sensor. This sensor is a direct replacement for models from 2013 to 2018. The OEM NO. 68354536AA sensor ensures a perfect fit for your vehicle. Installation is a breeze with helpful YouTube videos available. With this sensor, you can quickly relay temperature changes to your car's ECU, enhancing overall performance and reducing malfunctions.

The ATUOTPO Coolant Sensor is designed to fit Kenworth and Peterbilt trucks, including models T680, T880, and 579. This sensor helps you keep track of your truck’s coolant levels, so you can avoid engine overheating by refilling coolant on time. It’s made to fit securely, preventing leaks and keeping your cooling system reliable. Plus, it’s a quality part that replaces specific models like KZ359001 and 577.59511, ensuring you get a dependable product that suits your vehicle. With this sensor, you get a practical and efficient solution to maintain your truck’s engine health.

The AUGREX Coolant Sensor Connector is made specifically for Peterbilt and Kenworth trucks, ensuring a perfect fit and reliable replacement for your old connector. Its sturdy design, including a 15-inch length and 18AWG wire with weatherproof sealing, protects it from damage and aging, so it works well even in tough conditions. This connector helps your coolant sensor send accurate signals, so you can trust your vehicle’s coolant level readings. By using this connector, you reduce the risk of engine overheating and damage, keeping your truck safer and more dependable on the road.

The MOSYPT Coolant Level Sensor is a high-quality aftermarket replacement sensor compatible with Kenworth T660, T800, and W900 models, as well as Peterbilt 348, 365, 367, 382, 384, 385, 386, and 389 coolant tanks. With its OE numbers including 904-7631, N9267001, RP31640002, and S23845, this sensor is designed to ensure trouble-free performance. The three-way terminal connector type and 100% new ABS plastic material provide reliability and durability. By accurately detecting the coolant level, this sensor helps prevent engine damage due to low coolant levels. With the MOSYPT Coolant Level Sensor, you can have peace of mind knowing that your coolant system is working efficiently and effectively.

The YCUPONE Coolant Sensor is designed to fit a wide range of BMW models, making it easy for you to find the right part by using the parts search tool. This feature helps ensure compatibility with your vehicle's year, brand, and model, saving you time and guesswork. If you have any questions about the product, you can reach out to the seller for assistance, providing extra support during your purchase. Keep in mind, this is a non-OEM accessory, so it offers a cost-effective alternative to original parts. The package includes one coolant level sensor, ready to install and help you monitor your vehicle’s coolant levels effectively.

The MOSYPT Coolant Sensor is designed to fit select Kenworth models and the Cummins QSK50 engine, making it a reliable choice for specific vehicle needs. Its OE numbers ensure you get the exact part you need for compatibility and easy replacement. The 3-pin connector type offers straightforward installation, saving you time and effort. Each sensor undergoes testing before shipping, so you can trust it to perform without issues. This sensor helps you monitor your engine's coolant level accurately, preventing overheating and potential engine damage.

The HYXUAN Coolant Sensor is designed to fit 2008-2020 Cascadia and 2007-2017 Columbia models, ensuring compatibility with your vehicle. This means you can trust the sensor to work smoothly with your truck’s system. It comes with the reference part numbers like 924-5205 and others, helping you easily verify it matches your original part. The package includes one coolant level sensor, so you get exactly what you need for replacement. Featuring a 2-way terminal connector and made from durable ABS plastic, this sensor offers reliable connections and long-lasting performance for your cooling system.