I was buying parts from Geno's to service my serpentine belt on my 06, from Geno's garage when I came to tensioners I thought to my self "I want the best I can buy" so I bought the most expensive tensioner the one from Cummins. I figured it was the original so it should be the toughest and it was the most expensive, by a lot over the Dayco. so I bought it and when I got the parts today I opened the box with the Cummins part # and all and guess what it says right on it as big as day yes Dayco I could of saved a ton of money and just bought the Dayco. Just thought you guys would like to know