Ask us about sending in your used OEM bushing arms One of the three sources of the 100 Series "clunk" - the front differential bushings support and cushion the front diff through acceleration, driveline moment, and shifting from 'D' to 'R.' Over time these bushings wear out and create a clunking sensation when shifting gears or, in extreme cases, when accelerating from a stop. This pre-assembled support arm replaces the OEM rubber bushing (found in 52380-60040) with the SuperPro polyurethane bushing (SPF3575K). Poly bushings significantly reduce deflection which in this case reduces the infamous 100 Series "clunk." Includes: OEM Support Assy*** (1x): 52380-60040 SuperPro Front Differential Lower Support Bushing (1x): SPF3575K Installation grease SuperPro Instructions Includes SuperPro USA lifetime warranty ***used support arm with pre-pressed SPF3575K polyurethane bushing *see also: OEM 100 Series Front Diff Bushing kit (rubber) Fitment details: 01.1998-07.2007 Toyota Land Cruiser (UZJ100, HDJ100, FZJ100, HDJ101) 01.1998-07.2007 Lexus LX470 (UZJ100) MADE IN JAPAN, AUSTRALIA Assembled in Atlanta, GA by Cruiser Patch staff