Yuesstloo Turbo Leak Tester Kit 19PCS — 0–6 bar Gauge & 16 Stepped Adaptors for Boost and Intercooler Leak Diagnosis

When a turbocharged engine loses boost, the culprit is often a leak somewhere in the intake or cooling circuit. This Yuesstloo kit bundles stepped adaptors, a 0–6 bar pressure gauge with regulator, sealing stoppers and a smoke adaptor so you can safely pressurize the system, hold readings and locate escaping air for fast diagnosis.

How do I use this kit to find a boost leak?

Connect the appropriate stepped adaptor to the hose or port, seal the opposite ends with the supplied stoppers, then attach the gauge and slowly pressurize using shop compressed air. Monitor the gauge for pressure decay and listen or apply soapy water or smoke to reveal the leak location.

• Choose the matching adaptor size from sixteen stepped fittings.
• Seal intake/exhaust openings with rubber stoppers included in the set.
• Attach the gauge, set regulator low, and introduce air gradually.
• Use the lockable dial to capture stable readings and the red relief valve to bleed excess pressure.

What sizes and components are included for different vehicles?

The kit contains 16 stepped adaptors that cover a broad range of hose diameters from roughly 31 mm up to 110 mm, accommodating most car and light commercial turbo plumbing. Also included are a 0–6 bar (0–87 psi) gauge with shut-off valve, pressure regulator and a smoke adaptor for visual leak detection.

• Adaptor ranges: 31–38mm, 46–51mm, 55–60mm, 65–70mm, 75–80mm, 85–90mm, 95–100mm, 105–110mm.
• Pressure gauge: 0–6 bar with lock and manual on/off valve.
• Smoke fitting for visualizing small leaks; compatible with shop air and common smoke machines.

Is this safe for my turbo and cooling components?

Yes, when used correctly. The kit is designed for low-pressure leak checks; never exceed recommended pressures for your vehicle. The regulator and excess-pressure release help control and quickly reduce pressure if needed.

• Start with regulator preset to low before pressurizing the system.
• Use the locked gauge reading to avoid repeated adjustments during inspection.
• Bleed pressure with the red relief valve if over-pressurization occurs.

Can I use this on radiators and cooling pipes as well?

The Yuesstloo tester works beyond turbo systems — it’s suitable for radiator, cooler, and general pipe or tube assemblies where pressurized leaks are suspected. Confirm adaptor fitment for your particular hose diameters before use.

• Applicable to intercoolers, radiators and many tube assemblies.
• Compatible with most cars and light commercial vehicles; select heavy-duty use may vary.
• Requires workshop compressed air and proper safety precautions during pressurization.

Who is this for? Technicians, home mechanics and fleet maintenance teams who perform boost troubleshooting or cooling-system leak checks will benefit from this Yuesstloo set. It’s built for garages that need a versatile, workshop-ready tool to find leaks quickly and reduce diagnostic time; however, always verify adaptor compatibility with your vehicle before purchase and operate using proper compressed-air safety procedures.