REAR AXLE FIELD IDENTIFICATION Axles are manufactured by Buick Chevrolet Buffalo Chevrolet Warren Chevrolet Gear and Axle Oldsmobile Pont1ac and McKinnon Divisional Manufacturer code letters will be metal stamped on the axle tube adlacent to the carrier for field identi fication See example Metal stamped on r ght front inboard side letters and numerals 1 4 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 MINIMAL REQUIREMENTS FOR IDENTO PLATE NK B 218 D W LIMITED SLIP IDENT GBO OPTION W BORG WARNER RATIO E EATON CODE O OLDS MANUFACTURER IDENTITY DAY OF YEAR AXLE BUILT D DAY SHIFT N NIGHT SHIFT MANUFACTURER IDENTITY B BUICK G CHEVROLET GEAR AND AXLE O OLDSMOBILE C CHEVROLET BUFFALO P PONTIAC K GM OF CANADA ST CATHERINES M PONTIAC CANADA MCKINNON W CHEVROLET WARREN MANUFACTURERS IDENTIFICATION WILL APPEAR IN THE DESCRIPTION COLUMN OF CATALOG EXAMPLE 82 A B C W G8O 488333 2 PLATE DIFF PRELOAD P M TYPE 1991 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 17W x 5 000 5 2 6 91