OEMTOOLS Cooling System Pressure Test Pump — Radiator Pressure Tester 4–30 PSI with Steel Pump & Case

OEMTOOLS Cooling System Pressure Test Pump is a handheld radiator pressure tester kit that pressurizes and inspects automotive cooling systems to locate leaks and verify system integrity.

This compact, steel-built pressure pump provides a straightforward way to diagnose coolant system problems on most domestic and import vehicles. The tester covers a pressure range of 4–30 PSI and works with common cooling-system adapters (sold separately), making it useful for professional technicians and DIYers who need a reliable, portable tool that stores neatly in its molded case.

How does the pump help find cooling system leaks?

The pump forces pressurized air into the radiator or coolant neck while you watch the gauge for drops in pressure, revealing leaks in hoses, radiator cores, heater cores, or water pumps. Because it stresses the system without running the engine, it lets you inspect seals and connections safely and visually.

• Pressurizes system between 4 and 30 PSI for controlled testing
• Clear dial gauge for quick pressure monitoring
• Manual lever and relief valve to apply and release pressure
• Use with OEMTOOLS adapters to fit different filler necks

Which vehicles and adapters will this radiator pressure tester work with?

The pump is designed to be nearly universal for most domestic and import cars and light trucks because of its broad pressure range and compatibility with common adapter sets. Adapters are not included, so match the proper OEMTOOLS adapter to your vehicle’s radiator neck for a correct seal.

• Suitable for a wide range of passenger vehicles and light trucks
• Adapters sold separately for specific radiator/filler neck types
• Ideal for systems requiring up to 30 PSI testing pressure
• Compact case stores adapters for on-the-go service calls

What features make this pressure tester durable and easy to use?

The tester assembly uses heavy-duty steel components and a robust gauge to withstand workshop use, while the lever-style pump and integrated pressure relief valve make operations simple and predictable. The included blow-mold carrying case protects the tool and leaves room for adapter storage and transport.

• Steel construction for longevity in professional settings
• Lever pump design for efficient manual pressurization
• Built-in pressure relief valve for safe depressurizing
• Molded storage case keeps components organized and protected

How do I use it safely and get accurate results?

Warm the engine to normal operating temperature, then cool it enough to remove the radiator cap per vehicle instructions before connecting the adapter and pump. Gradually apply pressure, monitor the gauge for drops, and visually inspect hose connections and components; always release pressure through the relief valve before removing the tester.

• Follow vehicle manufacturer steps when removing radiator caps
• Apply pressure slowly and observe the gauge for leaks
• Inspect visible hoses, clamps, radiator seams, and fittings
• Release pressure through the relief valve before disconnecting

Who is this for: The OEMTOOLS Cooling System Pressure Test Pump is built for professional mechanics, mobile technicians, and informed DIY vehicle owners who need a durable, portable diagnostic tool for coolant-system leak detection. If you perform regular cooling-system service, troubleshoot overheating or pressure loss, or need a compact tester to carry between jobs, this kit provides a reliable, easy-to-use solution—just add the correct OEMTOOLS adapter for your vehicle’s filler neck.