GMOO 169 SERVICE KITS n I KIT 1 0 289 GASKET KIT CYL HD 92 B LB4 L 1 12507990 2 2 239 WIRE KIT SPLG 92 B LB4 1 12074075 NOTE 1 SEE RESPECTIVE GROUP FOR DETAILED ILLUSTRATED VIEW RPO DEFINITIONS LB4 ENG NE 4 3L 4 3Z V6 V I 1992 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 17B T I 0 000 GROUP 0 4 I A 8 92