Ford Bronco/F-Series Axle Code Chart - Certification Label Rear Axle Ratios

This document is a Ford reference illustration (figure number Y2671-L) explaining how to read the vehicle certification label (Safety Compliance Certification Label) manufactured by Ford Motor Co. in the U.S.A. The sample label shows fields for DATE, GVWR, FRONT GAWR, REAR GAWR (with tires/rims at PSI cold), VIN, TYPE, exterior paint colors, and DSO, plus a coded line with WB (133), BRAKE (B), BODY (AK4), TRANS (E), AXLE (2 62), TAPE (E), and SPRING (2K2I). The diagram highlights the AXLE box and shows how its digits decode: the rear axle code is looked up in the REAR AXLE CODES table, which lists codes (12, 18, 17, 19, H9, 24, 25, 29, 35, 39, 45, 49, 58, 65, 68, 69, 72, 73) with axle capacities from 3800 to 11,000 lbs. and gear ratios from 2.73 to 5.13, including a limited-slip 3.55 (code H9). The FRONT AXLE CODE table shows code 2 = LIMITED-SLIP. A footnote defines LS = LIMITED SLIP. A reader can use this chart to decode the axle codes on a Ford truck door-jamb certification label to determine rear axle capacity, gear ratio, and limited-slip status.