OEMTOOLS Coolant Vacuum Refill & Pressure Tester Kit — 5 Adapters, Tapered Cone Seal for Radiators

OEMTOOLS Coolant Vacuum Refill Kit is a handheld vacuum and pressure tester that refills cooling systems without air pockets using a tapered cone and five adapters.

Whether you're topping off a radiator or bleeding a cooling system after maintenance, the OEMTOOLS 24444 kit combines vacuum refill capability with pressure testing to make coolant service quicker and more reliable. The kit's vacuum filler removes trapped air while drawing coolant into the system, and the included adapters and tapered cone seal fit a wide range of radiator necks and overflow bottles. A recommended working pressure of 70–110 psi lets you perform leak checks and confirm system integrity before the vehicle returns to service.

How does this kit remove air from the cooling system?

The vacuum refill tool evacuates air from the radiator and cooling passages so coolant flows in smoothly, preventing air pockets that can cause hot spots or poor heater performance. By creating a vacuum you reduce the chance of trapped air and eliminate repeated bleeding cycles.

• Creates vacuum to draw coolant into the system without introducing air
• Works with radiator necks and overflow bottles using the tapered cone adapter
• Speeds up refill compared with gravity-only methods

Can I use this kit to check the system for leaks?

Yes — the OEMTOOLS kit doubles as a pressure tester so you can pressurize the cooling system and inspect for leaks. Use the hand pump to reach recommended pressures and observe whether the system holds pressure or bleeds off.

• Recommended working pressure 70–110 psi for effective leak detection
• Hand-operated pump lets you control pressurization during inspection
• Visual and audible cues help identify leaks quickly

What adapters are included and why do they matter?

The kit includes five bushings plus a tapered cone adapter so you can seal onto most radiator filler necks and coolant reservoirs without custom fittings. A secure seal is critical to maintain vacuum and pressure during testing and filling operations.

• Five different bushings to match common neck diameters
• Tapered cone adapter creates an airtight fit on irregular openings
• Adapters reduce the need for improvised seals and speed up setup

How does this help during routine coolant maintenance?

Using vacuum refill and pressure testing simplifies coolant replacement, heater core flushing, and thermostat service by reducing air-related troubleshooting. The kit helps you complete maintenance in fewer steps and verify the system's readiness before road testing.

• Allows one-person refills with fewer follow-up burping steps
• Confirms system integrity after hose or component replacement
• Minimizes risk of recurring overheating symptoms tied to trapped air

Who is this for: The OEMTOOLS Coolant Vacuum Refill & Pressure Tester Kit is designed for DIY mechanics, professional technicians, and fleet maintenance staff who need a compact, reliable tool to refill cooling systems and perform leak checks. It suits cars, light trucks, and many passenger vehicles where adapter variety and a secure cone seal speed up repairs. If you regularly replace coolant, service heater cores, or troubleshoot cooling issues, this kit reduces guesswork and helps ensure the system is properly bled and pressure-tested before use.

• Key features: vacuum refill function, pressure testing capability, five bushings, tapered cone adapter, 70–110 psi recommended working pressure.