Vehicle description: Passenger vehicles using aftermarket driver's seat belt assemblies that were sold by Ford parts departments from January 1, through June 13, 2000. These seat belt assemblies fail to comply with the requirements of FMVSS no. 209, "seat belt assemblies." The equipment involved is service stock seat belt assemblies, model nos. H 9977, H 9979, T 9063, and T 9217, built by TRW vehicle safety systems, Inc. (TRW) manufactured from June 1, 1998 through May 21, 2000. Some of these seat belt assemblies may have been installed as service replacement equipment on the vehicles involved in the recall.