REAR AXLE FIELD IDENTIFICATION Axles are manufactured by Buick Chevrolet Buffalo Chevrolet Warren Chevrolet Gear and Axle Olds mobile Pontiac and McKinnon Divisional Manufacturer code letters will be metal stamped on the axle tube adjacent to the carrier for field identification See Example Metal stamped on right front inboard side letters and numerals 1 1 high 3 outboard of carrier or are located on a metal tag attached to cover bolt Reference should be made to divisional service manuals for location on some models FIELD IDENTIFICATION I MlNlMUM REOUIRIESMENT FOR IIDENTO PLATE Q N K 218 D W IN BORG WARNER LIMITED SLIP IDENT IE EATON 1380 OPT O OLD3 D FOR DAY SHIFT N FOR NIGHT SHIFT ARATIO CODE DAY OF YEAR AXILE BUILT MANUFACTURER IDENTITY Note 1978 models thre fourth character indicates model year fifth through seventh Julian date The eigth character shift code IVIANUFACTURER IDENTITY B BUICK O OLDSMOBILE P IPONTIAC M PONTIAC CANADA G CHEVROLET GEAR AND AX E C CHEVROLET BUFFALO K GIM OF CANADA ST CATHARINES MCKINNON W CHEVROLET WARREN MANUFACTURERS IDIENTIFICATION WILL APPEAR IN THE DESCRIPTION COLUMN OF CATALOG IEXAMPLE 76 A B C W G8O 488333 2 PLATE DIFF PRELOAD P M TYPE WAREl IOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION BUICK 44W REV 1 82 15