KJE Coolant Pressure Tester Kit 31PCS — Radiator Pressure & Vacuum Refill Kit with 23 Adapters and Gauge

The KJE 31PCS Coolant Pressure Tester Kit is a complete radiator pressure and vacuum refill system designed to find cooling-system leaks and refill coolant without trapping air.

This all-in-one automotive cooling kit bundles a pressure pump with gauge, a vacuum refill tool, 23 radiator adapters, hoses, a thermometer, and supporting hardware in a molded case. It helps technicians and DIYers isolate leaks in caps, hoses, radiators, water pumps, and head gaskets, then perform a controlled refill under vacuum to prevent air locks. Built from brass, aluminum, rubber, and reinforced nylon, the set is built for repeated garage use and broad vehicle compatibility.

How does the kit detect leaks in a cooling system?

The pressure pump pressurizes the cooling system to simulate operating pressure, making escaping coolant visible or audible at leak points. The included gauge lets you watch for pressure drops that indicate a seal or component failure. Because adapters fit common radiator openings, you can test many makes without improvising.

• Pressure testing pump with clear gauge for monitoring drops
• 23 color-coded radiator adapters for quick fitment to many vehicles
• Clear hoses to observe escaping coolant or bubbles
• Selection of O-rings and connectors to maintain a tight seal

What does the vacuum refill tool do and why use it?

The vacuum purge and refill component evacuates air from the cooling system, then draws in fresh coolant to minimize trapped pockets. Removing air prevents hot spots and reduces the chance of engine overheating caused by airlocks. The process is faster and cleaner than gravity refilling and helps ensure complete coolant circulation right away.

• Vacuum refill pump pulls a vacuum before filling
• Controlled filling reduces trapped air pockets
• Thermometer included to monitor coolant temperature during service
• Works with supplied hoses and adapters for a sealed operation

Which vehicles and parts are compatible with this testing kit?

The kit covers most common cars, light trucks, and many European and Asian makes thanks to its 23 radiator adapters and additional aluminum fittings. It’s suitable for testing radiator caps, hoses, thermostats, water pumps, and head gasket sealing surfaces. If a direct fit isn’t available, the universal adapter and extra connectors extend compatibility.

• Adapters labeled and color-coded for quick identification
• Fits Mercedes-Benz, Toyota, Honda, BMW, VW, Audi, Porsche, Nissan, GM, Ford, and more
• Includes universal adapter and extra fittings for uncommon necks
• Durable materials resist corrosion and repeated use

What comes in the kit and how is it organized for workshop use?

The set ships in a molded storage case that keeps each piece accessible and protected. Inside you’ll find color-coded radiator caps, aluminum adapters, test connectors, a pressure pump and gauge, the vacuum refill tool, hoses, a thermometer, a radiator cap wrench, O-rings, and a user manual. Clear labeling and foam cutouts speed setup and teardown, so technicians can move efficiently between vehicles.

• 31 pieces including 17 radiator caps and multiple adapters
• Pressure gauge, vacuum refill tool, hoses, and thermometer included
• Molded case with organized slots for fast access and transport
• Spare O-rings and a wrench for on-the-spot maintenance

Who this is for: The KJE 31PCS Coldant Pressure Tester Kit suits home mechanics, mobile service techs, and professional shops that need a compact, versatile toolset for diagnosing cooling-system leaks and performing reliable vacuum refills. It’s especially useful for technicians working on a wide variety of makes who want a single kit that reduces guesswork and speeds routine coolant service.