Orion Motor Tech Coolant Pressure Tester Kit — 19‑Piece Radiator Leak Detector with 35 psi Gauge and Molded Case

The OMT Coolant Pressure Tester Kit is a 19-piece radiator cooling system diagnostic set that lets you pressurize, inspect, and pinpoint leaks up to 35 psi for most passenger vehicles.

If you service cooling systems — whether as a DIYer or a professional technician — having a reliable pressure tester saves time by revealing internal and external leaks, failed caps, or poor hose seals. Orion Motor Tech’s OMT kit bundles a manual vacuum/pressure pump, 15 color-coded adapters, a protected 2.5-inch gauge, a probe thermometer, and accessories in a molded case so you can test quickly on many common makes and models.

How do I use this kit to find a radiator or cooling-system leak?

Use the kit to pressurize the cooling system at the radiator or expansion tank and watch the gauge for pressure loss. A steady drop indicates a leak path; visual inspection while pressurized helps locate external leaks, while pressure that drops with no visible leak suggests internal issues.

• Attach the correct adapter to the radiator filler or reservoir using the color-coded, labeled pieces.
• Connect the hose and hand pump, then build pressure slowly up to the gauge limit (35 psi / 2.5 bar).
• Observe the gauge and inspect hose connections, clamps, radiator seams, and engine areas for escaping coolant or air bubbles.
• Use the probe thermometer to verify coolant temperature if needed before or after the test.

Which vehicles and components are compatible with the 15 adapters?

The kit’s 15 adapters cover a wide range of radiator filler necks and overflow reservoirs commonly found on European, American, and Asian passenger cars. The assortment fits brands such as BMW, Ford, VW, Mercedes, Nissan, Porsche, Fiat, Peugeot, Chrysler, and many others.

• Adapters are color-coated and have molded size markings for fast selection.
• Includes fittings for standard radiator caps and non-standard reservoir necks used on many modern cars.
• Adapter set makes the kit versatile for home garages and small shops with mixed-vehicle work.

What accuracy and build quality can I expect from the gauge and materials?

The OMT kit uses a 2.5-inch analog pressure gauge with a rubber protective boot for clear, durable readouts up to 35 psi (2.5 bar). Components are made from aluminum alloy, brass, nylon, and rubber to resist routine shop wear and retain a good seal during repeated tests.

• 2.5 in. gauge provides easy-to-read graduations and a protective rubber coating.
• Aluminum and brass fittings resist corrosion while nylon and rubber elements maintain reliable seals.
• Spare O-rings and a wrench are included for maintenance and secure connections.

How does the kit stay organized and transportable?

Everything stores neatly in a custom-molded carrying case that keeps adapters and accessories in place and speeds setup at the vehicle. The color-coded pieces and visible markings reduce time spent matching fittings under tight engine-bay lighting.

• Molded case with labeled cavities for each adapter, pump, gauge, and tools.
• Color coating on adapters allows quick visual selection during inspections.
• Compact footprint fits most toolboxes or shop shelves for convenient transport.

Who is this for: The Orion Motor Tech OMT 19-piece coolant pressure tester is aimed at automotive DIY enthusiasts, mobile mechanics, and small repair shops who need a portable, multi-adapter solution to diagnose coolant leaks and verify cap integrity. If you work on a variety of cars or want a single kit to test hoses, radiators, and reservoirs quickly without extensive disassembly, this set offers a practical, durable option.