GM09 097 28 9 172 PLATE VLV 29 9 170 SEAL KIT COMPRESSOR SHAFT 1ST DES 2 3 30 9 175 RING SEAL SEAT RETAINER NOTE 1 ALSO PART OF O RING KIT CMPR GROUP 9 170 I NOTE 2 SEAL KIT 2724319 GROUP 9 170 NOTE 3 1ST DESIGN 1984 PRIOR 2ND DESIGN 1985 AFTER 1 1 1993 GENERAL MOTORS SERVICE PARTS OPERATIONS BUICK 44A 4 93 9 1 1 9 000 GROUP