8 1/4 bearing adjuster

This is the part number history for the adjuster.
1972 was the first year the Chrysler parts catalog listed a 8 1/4 differential for the Valiant, Dart and Duster. Part number for the 72 model year was 3507882. In 1973 the number was superseded to 3507876,which continued thru 2004. In 2005 the number superseded to 3507876AB. It was last used in some 2010 trucks and evidently was cancelled in the past few years. They would be easy to find in junk yards, but then you have to deal with the dirty greasy environment. Just spotted this on eBay: 1984-2010 CHRYSLER DODGE MOPAR JEEP DIFFERENTIAL BEARING ADJUSTERS SET OF 2 NOS | eBay
He has the years listed incorrectly. It should have been listed for 1972 thru 2010.