Download Sportage Front Hub Seal Change This bulletin provides information on a change to Sportage 4WD hub seals. To improve hub vacuum sealing during 4WD operation, a new inner seal along with corresponding revisions to knuckles and CV shafts has been developed. This new seal design was incorporated from 10/21/00 production. Fig. 1: Identifying New & Previous Style Hub Seals To service earlier 1998-2001 vehicles (prior to 10/21/00 production) that experience inner seal problems, a service kit is available to retrofit the new seal. Use the procedures in this bulletin to install the service kit.