SKU: SK 3111

With the Closed Cooling System Expansion Tank Kit there will be no more over flow of antifreeze into the bilge.  Use on any engine to except anitfreeze from the heat exchanger and allow engine to pull antifreeze back as needed. The kit includes all parts and mounting hardware, including 14 lb radiator cap for heat exchanger. Perfect for those older Tiarra and Mercruisers engines that have the hose at radiater neck that just hangs over the back and overflows antifreeze into the bilge.