The C&R Racing Lightweight Late Model Pressurized Cooling Systems utilize the new radiator technology of the Lightweight Late Model Racing Radiators and adds a single gauge pressure setting tool with a female Jiffy Tite fitting, a new sight glass design pressure can with a male Jiffy Tite fitting, a bottle of Conklin SAFE water treatment and a pressure relieve valve (PRV). The benefits of a pressurized cooling system will allow the engine to safely operate for a longer period of time at higher temperatures. This lets you apply more tape to the grill opening of your race car for a greater aerodynamic advantage. The air spring in the pressure can affords running a leaner fuel mixture for more power and acts as a safety in case of overheating due to track debri, oil dry, dirt or rubber build-up!