Yonligonju Vacuum Coolant Filling Kit — Universal Cone Adapter, Brass Manifold & Gauge

Yonligonju Vacuum Type Coolant Filling Tool Kit is an air-powered radiator purge and antifreeze refill system that creates a vacuum to draw coolant into a sealed cooling system quickly and without air pockets.

Built for professional shops and DIY mechanics, this kit uses shop air to evacuate the radiator or expansion tank and then pulls in antifreeze or coolant under vacuum so fluids settle correctly without cavitation. The kit includes a universal rubber cone adapter, sturdy brass manifold, reinforced hose, vacuum gauge, and several gas plug fittings so it fits most cars, vans, SUVs and light trucks.

How does the vacuum filling method make coolant refills easier?

Removing air from the cooling system before refilling prevents trapped pockets that can cause hot spots and uneven circulation. The Yonligonju tool uses compressed air to create a negative pressure, then opens a path for coolant to flow in until the system re-equalizes with atmosphere.

• Create vacuum in the radiator or reservoir using shop air for faster, cleaner fills.
• Fill time typically 5–10 minutes depending on system volume.
• Gauge range -30 to 0 inHg helps you monitor vacuum level for accurate operation.

Which vehicles and radiator openings will this kit work with?

The kit’s universal conical rubber adapter seals openings 1.5–5 cm in diameter, covering most OEM radiator caps and expansion tanks. Quick-connect fittings and included European and American style gas plugs increase compatibility with a wide range of makes and models.

• Universal cone fits most radiator necks and overflow tanks.
• Pre-installed American-style plug plus European-style plugs in the box.
• Suitable for passenger cars, vans, SUVs and many light trucks.

What durable components are included and why do they matter?

Durability reduces downtime and keeps fluid paths uncontaminated. The Yonligonju kit pairs a brass manifold and fittings with an 18" braided rubber-resin hose to resist corrosion and pressure, while a metal chain hook provides a convenient hood-mount point during use.

• High-grade brass manifold and fittings resist corrosion over repeated use.
• 18-inch reinforced hose for low fluid resistance and safe handling.
• 21-inch metal chain hook allows secure hanging while you work.

How do I know when I’ve added the correct amount of coolant?

The integrated vacuum gauge gives a clear reference between -30 and 0 inHg so you can follow recommended vacuum levels and timing for coolant addition. Watching the gauge as the system fills helps ensure the coolant displaces air fully and the operation is completed correctly.

• Gauge reads vacuum range -30 to 0 inHg (-76 to 0 cmHg).
• Recommended vacuum window often -25 to -20 inHg for correct fill timing.
• Visual gauge feedback simplifies repeatable refills and professional results.

Who this kit is for: technicians, independent mechanics, and experienced DIYers who want a faster, cleaner method to purge radiators and top up antifreeze without guesswork. It’s particularly useful in workshop environments where compressed air is available and repeatable, professional-quality coolant service is required. If you need a portable, robust tool to reduce air entrapment and speed up coolant changes across many vehicle models, the Yonligonju Vacuum Coolant Filling Tool Kit provides the fittings, gauge, and hardware to get the job done reliably. Contact Yonligonju customer service if you have fitment questions or need replacement plugs or parts.