Dial Antifreeze Coolant & Battery Liquid Tester 6/12/24V

High-Accuracy Dial Type Antifreeze Coolant & Battery Liquid Densitometer

Keep your vehicle running at its best with this precision Dial Type Antifreeze Coolant Tester. Compatible with 6V, 12V, and 24V systems, this versatile hydrometer lets you quickly and accurately check the density of your engine coolant and battery liquid — so you're always prepared before extreme temperatures hit.

Whether you're maintaining a passenger car, truck, or heavy-duty vehicle, this handy tool gives you clear, easy-to-read dial readings without the need for batteries or electronics. Simply draw a fluid sample and read the result instantly — no guesswork, no complicated setup.

Made in Mainland China.

Key Features

• High Accuracy Dial Display — Easy-to-read analog dial for instant, precise readings every time
• Multi-Voltage Compatible — Works with 6V, 12V, and 24V vehicle battery systems
• Dual Function — Tests both antifreeze/coolant concentration and battery liquid density
• No Battery Required — Fully mechanical, non-electronic design for reliable operation anytime
• Compact & Portable — Lightweight and easy to store in your toolbox or glove compartment
• Durable Construction — Built from quality materials designed to withstand regular automotive use

Specifications

• Product Type: Antifreeze Hydrometer / Coolant Densitometer
• Compatibility: 6V / 12V / 24V vehicle systems
• Electronic: No (manual/mechanical operation)
• Battery Required: No
• Package Contents: 1 x Antifreeze Coolant Tester
• Origin: Mainland China

What's in the Box

• 1 × Dial Type Antifreeze Coolant & Battery Liquid Densitometer

Please allow 1–3mm differences due to manual measurement. Actual color may vary slightly from photos due to monitor display differences.

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Learn more: FuelEconomy.gov on vehicle maintenance

Frequently Asked Questions

Q: What vehicles is this antifreeze coolant tester compatible with?

A: This dial type coolant densitometer is compatible with 6V, 12V, and 24V vehicle systems, making it suitable for a wide range of vehicles including passenger cars, SUVs, trucks, and heavy-duty commercial vehicles.

Q: Do I need a battery or power source to use this tester?

A: No. This is a fully mechanical, non-electronic antifreeze hydrometer. It requires no battery or power source — simply draw a coolant or battery liquid sample into the tester and read the accurate result directly from the analog dial.

Q: What liquids can this densitometer test?

A: This tool is designed to test antifreeze/coolant concentration levels as well as battery liquid (electrolyte) density, helping you ensure your vehicle's cooling and electrical systems are properly maintained for all weather conditions.

Q: How accurate is the dial type coolant tester?

A: This tester is engineered for high accuracy, providing reliable density readings. Please note that minor measurement differences of 1–3mm may occur due to manual construction tolerances, which is standard for analog instruments of this type.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.