Orion Motor Tech coolant pressure tester kit — 33-piece vacuum refill set with adapters and molded case

Orion Motor Tech's OMT Master Coolant Pressure Tester Kit is a complete 33-piece set that locates cooling-system leaks and refills radiators under vacuum to prevent air locks.

This professional-grade kit combines a pressure tester and a vacuum refill system in one compact case so you can diagnose leaks, test caps and hoses, and refill coolant quickly and cleanly. Included adapters and fittings cover a wide range of European and domestic vehicles, while the molded storage case keeps each component organized and protected for shop or roadside use.

How does this kit find leaks in my vehicle's cooling system?

The pressure tester portion lets you pressurize the cooling system to reveal leaks that are otherwise invisible at idle. By applying a controlled pressure, it stresses gaskets, hoses, radiator cores and reservoir connections so escaping coolant or air appears at the source.

• Includes a hand pump and gauge to pressurize the system safely.
• 22 pressure-test adapters plus a universal fitting to match many filler necks.
• Detects leaks at radiator, expansion tank, head gasket area, heater core and hoses.

What makes the vacuum refill tool better than topping off the radiator?

The vacuum refill tool evacuates air from the cooling circuit and pulls coolant in under negative pressure, eliminating trapped pockets that can cause hot spots or poor heater performance. This method delivers a complete, air-free refill so the system runs more efficiently after service.

• Vacuum pump and purge/refill adapter create consistent vacuum for reliable filling.
• Hoses and O-rings included for leak-free connections during refilling.
• Probe thermometer helps verify temperature while bleeding and refilling.

Will the adapter set fit my car's radiator or reservoir neck?

The kit ships with 23 different radiator and reservoir adapters designed to fit a broad selection of makes and models. Color-coded adapters and molded size markings speed up selection so you spend less time searching for the right piece and more time working.

• Adapters support many European and American brands including BMW, VW, Mercedes, Ford, Nissan and more.
• Universal adapter is included for uncommon or hard-to-match filler necks.
• Color coating and molded labels make identification quick and accurate.

How durable and portable is this repair kit for shop or roadside use?

Components are made from corrosion-resistant aluminum alloy, brass, nylon and heavy-duty rubber to withstand repeated use and exposure to coolant and workshop chemicals. All parts are stored in a custom molded carrying case that protects fittings and keeps the set ready for transport.

• Robust materials ensure long-term functionality and reliable seals.
• Custom molded case holds each tool in place for organized storage.
• Compact footprint fits in a service bay, trunk or toolkit shelf.

Who is this for: This Orion Motor Tech OMT Master kit is designed for independent mechanics, mobile technicians, and DIY enthusiasts who need a single, versatile solution to diagnose cooling-system leaks and perform professional vacuum refills. It’s especially useful for shops servicing a variety of vehicle makes, as the extensive adapter set and durable construction reduce guesswork and repeat trips.