Detection ability: This pressure tester kit detects both internal and external leaks in cooling systems for a wide range of vehicles, including cars, motorcycles, commercial vehicles, trailers, and RVs. It can indicate which side of the cylinder block is leaking to help identify cylinder gasket failure. With this kit you can quickly identify potential issues in the cooling system and take appropriate action. Pressure testing function: The compression pump with a pressure gauge lets you easily test the pressure in the coolant circuit. Press the pump until the pressure reaches 10 to 15 psi. This helps ensure the cooling system is functioning properly and can prevent overheating and related problems. Construction and materials: The kit is designed for accurate testing with color coded test options to suit different vehicles. The parts are made from materials such as metal and ABS, providing durability and reliability for repeated use. Easy to use and carry: Operation is straightforward. You simply select a suitable adapter for the original cover, connect the hand pump, and start the test. The components are neatly packed in a storage box, making it easy to carry whether you are in a garage or on site. Compatibility: Suitable for a variety of vehicle types, including cars, motorcycles, commercial vehicles, trailers, and RVs. Practical use scenarios: Routine cooling system inspection during vehicle service or before long trips. Localizing leaks and diagnosing gasket failure by identifying the leaking side of the cylinder block. Verifying a recently repaired gasket or cooling system component by performing a pressure test to confirm seal integrity.