180, there are apparently 2 tensioner assemblies for the Crossfire... the one you show and the one that I have and seen on SRT's.... the SRT tensioner has a E10 torx on the end of the pulley shaft that a 17mm nut screws down on to hold the pulley... it does not have that style secruity torx screw holding the pulley on and does not have that cast 17mm "nut" for releasing tension....

Good info for folks needing a replacement.... I dont know if they are interchangeable, but would guess they are.....