must have been a typo on the part #
the part # is 25526387
GM PART # 25526387
CATEGORY: Drive Belt Tensioners
PACK QTY: 1 CORE CHARGE: $0.00
GM LIST: $129.93
OUR PRICE: $74.05
DESCRIPTION: TENSIONER
from gmpartsdirect.com , punch in that part # and youll see a picture
are you sure you need a tensioner and not just a shorter belt(635) rather than the 640 that most list as being for the 3.8T was ready to replace mine and found the problem was the new replacement 640 belt that pepboys sold me , swithed to goodyergatorback 4060635 and that did the trick , the gy belt is about 25.00 but there is also a kellyspringfeild 635 belt that is cheaper