ISINSWIFT Coolant Pressure Tester Kit 31PCS — Pressure & Vacuum Refill System with 17 Caps and 23 Adapters

The ISINSWIFT 31PCS Coolant Pressure Tester Kit is a complete radiator pressure and vacuum refill system for diagnosing leaks and performing controlled coolant replacements.

This all-in-one master kit combines a pressure hand pump, vacuum refill tool, color-coded radiator adapters and the accessories technicians and DIYers need to test, locate, and refill cooling systems without introducing air. Designed for broad vehicle compatibility, the set organizes fittings and tools inside a sturdy blow-molded case so you can work reliably on domestic and many imported cars and light trucks.

How does the kit find leaks in a cooling system?

The pressure testing hand pump pressurizes the cooling circuit to reveal escaping coolant or pressure loss, making visual and audible leak checks much faster than road testing. Use the included adapters and gauge to match the factory radiator cap connection and monitor for steady pressure drops.

• Hand pump pressure range 0–35 psi (0–2.5 bar) for controlled pressurization.
• 17 color-coded radiator caps and 23 adapters cover most vehicle ports and caps.
• Clear hoses allow visual verification of leaking coolant or bubbles.

What makes the vacuum refill system useful for coolant replacement?

The vacuum purge and refill tool pulls a vacuum on the cooling system to remove air pockets, then draws coolant in under negative pressure for a complete, bubble-free fill—important for systems with internal thermostat or heater circuits. The brass manifold and reinforced hose resist corrosion for repeatable service.

• Vacuum gauge range -30 to 0 inHg (-76 to 0 cmHg); optimal refill shown around -25 to -20 inHg.
• Durable brass manifold, aluminum and nylon fittings, and reinforced rubber hose.
• Thermometer included to monitor system temperature during service for safety.

Which vehicles and parts are compatible with this ISINSWIFT kit?

The kit includes a broad selection of adapters and radiator cap connectors to match many makes and models, including European, American, and Asian passenger cars and light-duty vehicles. Color-coded, labeled adapters simplify matching the right cap to the vehicle’s radiator neck or expansion tank.

• Suitable for BMW, Ford, Chrysler, Nissan, VW, Porsche, Mercedes-Benz, Opel, Fiat, Peugeot and many light-duty vehicles.
• 23 adapters plus 17 radiator caps give wide fitment coverage.
• Adapter labels and color coding speed selection and reduce cross-threading risk.

Who is this for? The ISINSWIFT 31PCS Coolant Pressure Tester Kit is aimed at home mechanics, mobile technicians, and small-shop users who perform routine coolant diagnostics, leak finding, and full-system refills. It’s especially useful if you service multiple vehicle makes or need a portable, organized solution for pressure testing and vacuum refilling. The durable carrying case and corrosion-resistant components make it practical for regular workshop use, roadside diagnostics, or prepping vehicles for sale or inspection. Always follow vehicle manufacturer service procedures and safety precautions when pressurizing or evacuating cooling systems.