When the infamous tee on our Ram Cummins diesel cooling system broke we thought of replacing it with a different tee. After finding this product we thought why? With this product you can eliminate 6 points of possible leakage. It's not cheap, but if you want to replace the messy bunch of hoses and clamps that is Chrysler's cooling system idea, then this is the way to go. Also, it has a lifetime guarantee so I think they have confidence in their product.