The one on the right is what's in there right now.
I'm thinking the rubber sealing portion isn't large enough to cover the oversized Helicoiled hole. James, something like this?
http://www.oreillyauto.com/site/c/detail/DAG0/66303.oap?year=1992&make=Mercedes-Benz&model=300SE&vi=1382004&ck=Search_66303_138200 4_3621&keyword=66303
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