Lisle 24610 Spill Free Funnel

* Includes threaded cap and adapter for newer GM "threaded style" radiator openings
* The Spill-Free Funnel eliminates trapped air pockets which usually cause erratic cooling system and heater performance
* Controls the proper amount of coolant entering system and enables unattended filling of the cooling system
* Funnel eliminates squeaky belts caused by coolant overflow and protects the environment
* Four adapters fit most domestic and import cars and light trucks
* Angled neck allows use on radiator caps that are placed at an angle