ZJERYL GULL cooling system pressure tester kit — 14-piece radiator tester, 0–35 PSI gauge & compact case

The ZJERYL GULL 14-piece cooling system pressure tester kit lets you find radiator and coolant leaks quickly by pressurizing the system up to 35 PSI and checking for drops and visible leaks.

This all-in-one automotive tester supplies the fittings, hand pump with gauge, and thermometer you need to diagnose cooling-system issues at home or in the shop. The kit assembles in moments to simulate radiator pressure, revealing leaks at hoses, radiator cores, heater cores, and head gaskets without starting the engine. Built-in corrosion protection on metal parts and a compact carrying case keep the set serviceable and portable.

How does this kit reveal coolant leaks and head gasket problems?

By pressurizing the cooling system to a safe, controlled pressure, the pump forces coolant or air through weak points so they become visible. If the gauge registers a pressure drop or coolant is observed escaping, you have evidence of a leak; combustion gases escaping into the coolant may also be detected by further testing.

• Hand pump with 0–35 PSI gauge replicates radiator pressure safely.
• Multiple adapters fit filler necks on most motorcycles, cars, and trucks.
• Visual leak detection aided by accessible connectors and hose fittings.

What components are included and what materials are used?

The kit includes a pressure test pump with an analog gauge, a high-range thermometer, and a selection of metal and nylon adapters to match different fill necks. Adapters are chrome plated or aluminum with rust-resistant treatment, while hoses use high-tenacity rubber and impact-resistant plastic for durability.

• 1 pump with gauge (0–35 PSI / 0–2.5 bar) and 1 thermometer (0–200°C / 32–400°F).
• 3 chrome-plated steel adapters, 10 nylon adapters, adapter handle, and connectors.
• Thick carrying case keeps everything organized and protects the gauge.

How easy is it to use this radiator pressure tester on different vehicles?

The set is designed for quick setup: choose the color-coded adapter that matches the filler neck, attach the pump, and pressurize. Color coding and a wide selection of adapters make it straightforward to adapt the tool to many makes and models without mixing parts.

• Color-coded adapters speed selection and reduce fitting errors.
• Adapters cover most motorcycles, passenger cars, and light trucks.
• Compact case allows mobile use and safe storage between jobs.

What maintenance and safety steps should you follow when testing?

Always perform tests on a cooled engine to avoid hot coolant burns and to get accurate pressure readings. Inspect hoses and seals before use, and store the kit dry to preserve plated and rubber components.

• Only test a cold cooling system—never open a hot radiator cap.
• Check the gauge and pump for damage before each use.
• Drain and clean adapters after use to prevent contamination and corrosion.

Who is this for: DIY mechanics, mobile technicians, and small shops who need a reliable, portable way to pressure-test cooling systems on motorcycles, cars, and light trucks. The ZJERYL GULL kit suits anyone who wants a complete adapter set, durable components, and an easy-to-carry case for routine diagnostics and leak isolation.