This ILLUSTRATION CATALOG has been compiled to assist in the location and identification of service parts The illustrations herein may not always show the exact part re quired however for identification purposes the group number or noun name can be readily located from a view covering a typical illustration I 4 The layout of the information contained in this publication is such I that the illustrations can be removed for combining with the Parts Listing Catalog Sections by groups The single catalog concept A can be maintained using this system or the separate Illustration J Catalog and Parts Listings Catalogs can be used During each calendar year complete reprints of the catalog are published as part of the Catalog Revision Service New or revised illustrations are mailed to dealers subscribing to the revision serv ice as they are scheduled All specifications and illustrations contained in this publication are based on the latest product information available at the time of printing Service Parts Operations reserves the right to make changes at any time without notice in data specifications material and models Due to Engineering and or part number changes all part number application herein should be verified by referring to the Parts Catalog I t J Y 1987 GENERAL MOTORS SERVICE PARTS OPERATIONS OLDSMOBILE 31A V 2 1 ev