correct idler pulley

[jmsa540]

Guys, had a shop replace my idler pulley and recharge my ac today. They used Gates 38006 (76mm) to replace it. I did some respearch and it's coming up on rockauto as a tensioner pulley and not an idler pulley? However, if you look at the dayco pulley its the same part number used for both idler pulley and tensioner pulley. My question is this; did they put the wrong part on the car or am I good to go?


https://www.rockauto.com/en/catalog/mercury,2003,marauder,4.6l+v8, 1387829,belt+drive,tensioner+p ulley,10346

https://www.rockauto.com/en/catalog/mercury,2003,marauder,4.6l+v8, 1387829,belt+drive,idler+pulle y,6956

[03Merc]

I bought this one
https://uploads.tapatalk-cdn.com/20170404/12755a80389cea12394c2009774aff c0.png


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[jmsa540]

UPDATE: After I did a cross reference for my 1996 Cobra, it uses the same exact part and it's listed both under tensioner and idler pulley. Good to go!