·【Heater Core Flush Kit】This heater core flush kit includes 1 coolant flush gun, 3 hose adapters, 1 air line fitting, and a roll of PTFE sealant tape, enabling quick and efficient cleaning of coolant, radiator, or heater core systems.

·【Powerful Cleaning Performance】By combining water flow with compressed air, the heater core flush kit produces a strong flushing action that removes built-up rust, debris, and contaminants from the heater core—restoring cooling efficiency and heating function.

·【Wide Compatibility】The radiator flush kit fits 1/2-inch garden hose (16mm ID, 20mm OD), 5/8-inch garden hose (15mm ID, 23mm OD), 3/4-inch US thread water hose, and 1/4-inch shop air hose. It also includes five universal coolant vent adapters: 0.7 in (19 mm), 1.1 in (29 mm), 1.3 in (32 mm), 1.4 in (36.5 mm), and 1.6 in (40 mm), making it suitable for most vehicle cooling systems.

·【Ergonomic & Easy to Use】The coolant flush gun features an adjustable trigger with a lock mechanism for continuous operation without hand strain. Simple connections, along with the included PTFE tape, help prevent leaks for a secure fit every time.

·【Effortless Operation】Just attach your garden hose and air line to the corresponding inlets, insert the coolant flush gun nozzle into the coolant hose, and turn on the water. You're ready to start flushing immediately. The included PTFE tape provides a tight, reliable seal for worry-free, leak-resistant performance.