Radium Engineering Universal Coolant Expansion Tank Fuel Pump Fitting Kits The threads are rolled after

The threads are rolled after heat-treating

and the engine is unable to push gasses out of the combustion chamber efficiently

For early vehicles with an engine bay mounted fuel filter

ensuring a leak-free seal and allowing for quick and convenient changes to a race pipe at the drag strip

Will not strip stuck drain sockets like using a 1/2" extension

Radium Engineering Universal Coolant Expansion Tank Fuel Pump Fitting Kits The threads are rolled afterCoolant expansion tanks are necessary for proper air bleeding in applications that utilize a low mounted radiator (such as a V Mount) or rear mounted radiator. However, expansion tanks are also valuable if integrated in a common radiator setup. To allow heat expansion, traditional coolant systems require air to be present in the top portion of the radiator during low temperatures. An coolant expansion tank permits the radiator to be 100% filled with