The Flex-A-Lite In-line Radiator Hose Adapter is an automotive component designed for radiator hoses with a 1-1/2-inch inside diameter, providing a threaded fitting for a thread-in temperature sensor. To use this car parts adapter, all you have to do is cut the radiator hose, insert the adapter and secure it with hose clamps (not included). The adapter features one brass plug and two 1/4-inch NPT ports that can be used with a temp sensor. You can also connect a zinc anode to the adapter to protect aluminum components in the cooling systems from damage caused by electrolysis and coolant additive breakdown. This auto parts spacer adapter comes with a one-year manufacturer warranty, providing peace of mind for car enthusiasts who demand quality and reliability.