If that's the center bearing for the driveshaft, then get a new one before it leaves you stranded. They're not that expensive and only and hour or two to replace with hand tools. I did not need a puller, but mine failed at 80 mph and DID leave my wife stranded--300 miles from home!

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Lenny

There are only three sports: bullfighting, motor racing and mountaineering; all the rest are merely games. --Ernest Hemingway

'10 GL550/'04 BMW 545/'99 BMW 323/'98 ML320/'87 VW GTI (race)