I just took off the bearing bracket for my 90 300E, I noticed that all of them have o-rings except for the one that is on the lower right side-facing it when removing it (which is hook to some sort of a bracket maybe for tensioner). Am I right or I might have dropped the o-ring in between that bracket and the engine. Can anybody help me on this one, because if I dropped it, hopefully it should be someplace under the car, which is seating outside while waiting for the parts from fastlane.
Thanks for all the replies..

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Edgar
Warminster, PA