Automotive radiator testing kit, the DAYUAN Radiator Pressure Tester Kit, finds coolant leaks and speeds bleeding and refills. That reassurance helps home mechanics and small workshops tackle cooling-system faults with more confidence. Does the kit cover enough vehicles and cap types to be genuinely useful?
⚡ At a Glance
- • Pressure Range: 0 - 35 psi test range for radiator and cooling-system checks
- • Best for: Home mechanics and small workshops diagnosing leaks and changing coolant
- • Not ideal for: Technicians requiring OEM-specific cap testers for rare or obsolete vehicles
A 28-piece universal kit combines pressure testing with vacuum purge and refill capability. Colour-coded caps and an extra adaptor aim to increase compatibility with domestic and import vehicles.
Fast Leak Detection – Thanks to a 0 - 35 psi pressure pump
A hand-operated pressure pump connects to radiator and expansion cap adaptors to apply up to 35 psi, revealing slow or hard-to-find leaks. The included fittings allow testing both radiator and cooling-system seals.
Quicker identification of leaks reduces time spent dismantling the cooling system and narrows down fault locations rapidly.
Quicker Coolant Change – With vacuum purge and refill connection
A purpose-designed vacuum purge and refill connection allows the pump to draw coolant through the system and refill under reduced pressure, helping remove trapped air. The special connection is built to work with the kit's adaptors and caps.
Faster, cleaner coolant changes with fewer air pockets improve cooling performance and reduce the need for repeated bleeding.
Wide Cap Compatibility – With 28 colour-coded test caps and extra adaptor
Colour-coded test caps match common radiator and expansion tank seals and adapt to various neck sizes, while the kit includes one additional adaptor compared with the 27-piece version. The selection targets both domestic and import vehicle fittings.
Comprehensive fittings mean fewer trips to purchase separate adaptors and better coverage for mixed vehicle fleets.
✨ The 4 Key Reasons for DAYUAN Radiator Pressure Tester Kit
- 28-piece universal cap set – Fits a broad range of radiator and expansion seals.
- Vacuum purge and refill tool – Speeds coolant changes while reducing trapped air in systems.
- Colour-coded test caps – Makes identifying the correct adaptor quick and reliable.
- Extra adaptor beyond 27-piece kits – Adds coverage for more domestic and import vehicles.
📋 Technical Details at a Glance
- Category: Automotive Parts and Accessories
- Kit pieces: 28 pieces
- Test Range: 0 - 35 psi
- Functions: Pressure testing, vacuum purge and coolant refill
- Cap types: Colour-coded radiator test caps
❓ Frequently Asked Questions
Q: Can the kit test most cars' radiator caps?
A: Yes. The 28-piece universal kit with colour-coded test caps and an extra adaptor is designed to fit most domestic and import vehicles, and user reviews report comprehensive fittings for common caps.
Q: What pressure range does the tester use?
A: The test range is 0 - 35 psi, which covers typical cooling-system pressure checks for leak diagnosis.
Q: Can the kit bleed and refill coolant under vacuum?
A: Yes. A special vacuum purge and refill connection is included to allow vacuum bleeding and refilling, and reviews note an effective pump and vacuum bleeder for leak testing.
🏆 Our Verdict
The DAYUAN Radiator Pressure Tester Kit suits home mechanics and small workshops that need a single kit for leak diagnosis and coolant replacement. Colour-coded caps, an extra adaptor, and a vacuum purge/refill connection make leak finding and bleeding noticeably quicker and cleaner. The comprehensive fittings and functionality should repay their value through fewer workshop visits and faster diagnostics over time.
