I replaced this one on mine half a year ago.
Can't remember any hazzle with it. Just unscrewed the old one and put the new one back in.

If the treads look fine, I'd just put it back in and tighten it firmly. A little locktite wont harm, but shuldn't be necessary.

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-1992 300 TD Turbo
-198 2600E
-2004 E240 4matic LPG
-2000 Jeep
Editor, Norwegian Mercedes-Benz Enthusiasts Club Magazine MB Tidende www.mbentusiastklubb.com