Review on Mopar 5511 6901AA Radiator Cap: Ensuring Optimum Cooling Performance by Chris Goldsby

If you have a Mopar part, replace it with a Mopar part. I bought another brand from a discount store and my jeep overheated. I ended up changing the thermostat and water pump before anyone suggested the radiator cap might be the problem. It was a cap. I haven't had any issues since going back to the OEM.