Important!! Engine disassembly is required to install this bearing kit for the first time. Bearing will now be servicable for future replacement intervals. Kit contains: Superior ceramic bearing, custom shaft cover flange with seal and bolts, improved center bolt, snap ring, IMS adapter bushing, spiroloc, IMS plug. Requires IMS tool set #10 0125 001, and IMS supplemental tool set #10 0125 003. Installation by an automotive professional is required to insure proper fit ,function, and any necessary support by the manufacturer. Must identify IMS bearing center bolt nut size, visable on cover flange. This kit is only for engines with a 12 mm nut (22 mm wrench size).