REAR AXLE FIELD IDENTIFICATION Axles are manufactured by Buick Chevrolet Buffalo Chevrolet Warren Chevrolet Gear and Axle Oldsmobile Pontiao and McKinnon Divisional Manufacturer code letters will be metal stamped on the axle tube adjacent to the carrier for field identi fication ee example Metal stamped on right 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 F T T 7 NK B 218 D W LIMITED SLIP IDENT GSO 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 CM OF CANADA ST CATHERINES i M PONTIAC CANADA MCKINNON W CHEVROLET WARREN MANUFACTURERS IDENTIFICATION WILL APPEAR IN THE DESCRIPTION COLUMN OF CATALOG EXAMPLE 82 A B C W GBO 488333 2 PLATE DIFF PRELOAD P M TYPE i 1990 GENERAL MOTORS SERVICE PARTS OPEFlAT ONS PONT AC 22W T L REV 6 90 5 1 5 000