ISINSWIFT Coolant Pressure Tester Kit 31PCS — Vacuum Refill & 35 PSI Gauge, 17 Adapters

ISINSWIFT 31PCS Coolant Pressure Tester Kit is a complete vacuum refill and cooling-system pressure-testing set designed to diagnose leaks and refill coolant cleanly on most passenger vehicles.

This all-in-one kit combines a pressure hand pump, vacuum refill tool, color-coded radiator adapters, reinforced hoses and accessories in a rugged carrying case so technicians and DIYers can test, purge and refill cooling systems without spills or guesswork. The kit’s components are made from aluminum, brass and reinforced rubber for corrosion resistance and repeatable performance; adapter labels and a broad size range help match caps to European, Asian and American makes.

How do I use the kit to find coolant leaks?

Use the hand pump and the matching radiator adapter to pressurize the cooling system to the vehicle’s specified pressure; the gauge shows pressure up to 35 psi so you can watch for drops that indicate leaks. Check hoses, the radiator, head gasket area and heater core connections while the system is pressurized to locate escaping fluid or air.

• Attach the correct color-coded radiator adapter for a secure seal.
• Pump up to the recommended psi using the hand pump and monitor the gauge.
• Inspect visible components for wetness, bubbles, or pressure loss.
• Use the included thermometer to monitor temperature when needed.

What makes the vacuum refill feature useful for maintenance?

The vacuum refill tool pulls air out of the cooling system and allows coolant to flow in without trapping pockets of air, which reduces the chance of overheating or poor circulation. The gauge shows vacuum between -30 and 0 inHg so you can reach optimal refill ranges and ensure a complete, bubble-free fill.

• Vacuum purge reduces air pockets that cause hot spots and noise.
• Clear hoses let you watch old fluid evacuate and new coolant enter.
• Aluminum and brass fittings resist corrosion for reliable seals.
• Marked vacuum range (-25 to -20 inHg) indicates ideal refill performance.

Which vehicles and parts are compatible with this adapter set?

The kit includes 17 color-coded radiator caps and multiple adapters designed to fit many European, American and Asian cars and light trucks, including BMW, Ford, Chrysler, Nissan, VW, Porsche, Mercedes-Benz, Opel, Fiat and Peugeot models. Each adapter is labeled for quick selection, helping you match the vehicle’s filler neck or pressure cap precisely for testing or refilling.

• 17 color-coded radiator caps for fast identification.
• 3 aluminum adapters plus a universal adapter for unusual necks.
• EU and US air intake joints for broader vehicle coverage.
• O-rings and spare fittings included for secure sealing.

What durability and accuracy features should I expect from the tools?

Components are built from premium materials — brass manifold, aluminum adapters, reinforced rubber hose and durable nylon fittings — to withstand repeated pressure cycles and resist corrosion. The pressure gauge reads up to 35 psi and the vacuum gauge displays negative inches of mercury, giving clear, repeatable indications for both leak testing and vacuum refilling tasks.

• Brass manifold body for long service life and corrosion resistance.
• Reinforced rubber hose resists high pressure and wear.
• Clear fill hoses provide visual confirmation of fluid flow.
• Included thermometer and user manual for safer, accurate use.

This ISINSWIFT kit is built for home mechanics, mobile technicians and small shops that need a single portable solution for cooling-system diagnostics and coolant replacement. If you repair a variety of vehicle makes, want to avoid air pockets during coolant changes, or need a durable pressure-testing set that travels easily, this 31-piece kit provides the adapters, gauges and fittings to do the job cleanly and reliably.