Used knock sensor harness grommet for Gen III LS engines.  Mounts on the wire of the knock sensor harness, required butt connecting your wire to repair a damaged grommet. Sold individually.  Fits the following:

97-04 LS1/LS6 Corvette
98-02 LS1 Camaro Z28, SS
98-02 LS1 Firebird Formula, Trans Am, WS6, Firehawk