I removed the driveshaft bolts around the "doughnut" aka GUIBO aka Flex-joint to give the engine a little more room while taking out the oil pan. right before the bearing was a spring that looked mangled up. I removed it and now it makes a perfect key-ring. But where do I find a replacement? ?

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How important is this spring? I didn't notice a difference while it was all mangled up in there...