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Threaded cap and adapter for newer GM -inch threaded style-inch radiator openings
Eliminates trapped air pockets which can cause erratic cooling system and heater performance
Controls amount of coolant entering system and enables unattended filling of the cooling system
Eliminates squeaky belts caused by coolant overflow and protects the environment
Includes four adapters which fit most domestic and foreign vehicles and light trucks
Stanley JFF160 Proto Spill-Free Funnel Threaded cap and adapter for newer GM -inch threaded style-inch radiator openings. Eliminates trapped air pockets which can cause erratic cooling system and heater performance. Controls amount of coolant entering system and enables unattended filling of the cooling system. Eliminates squeaky belts caused by coolant overflow and protects the environment. Includes four adapters which fit most domestic and foreign vehicles and light trucks. Angled neck for use with radiator caps placed at an angle.