Integrated Temperature Gauge: Built-in calibrated thermometer displays coolant temperature from 30° to 270°F in Fahrenheit and Centigrade for quick visual monitoring Enhanced Safety Design: Helps prevent burn injuries by clearly indicating when coolant temperatures are safe before removing the radiator cap Cooling System Support: Integrated coolant reclamation valve works seamlessly with overflow and recovery systems to reclaim expelled coolant Durable Construction: Steel radiator cap with chrome-plated crown and color-coded trim ring for a long service life Universal Fitment: 16 PSI pressure rating fits most domestic vehicle radiators, providing reliable sealing and consistent cooling performance The built-in calibrated thermometer on this chrome-plated 16 lb. radiator cap makes it easy to check your coolant temp - and to know when its safe to remove the cap. Fits radiators on most domestic vehicles. Helps to prevent burn injuries. Integrated coolant reclamation valve works great with your coolant recovery system. Your radiator can reclaim coolant from your overflow bottle. Wide 30° to 270° F temperature range. Calibrated in centigrade and Fahrenheit. Color-coded temperature ranges. Chromed crown with a colored trim ring. Learn more about cooling systems, how to choose the proper pressure cap, and how they work by reading our tech article. Cooling System Principles.