Ford 8.8 Axle Tag Decoder Diagram - Ratio, Plant Code, Build Date (Bronco)
Ford rear axle identification tag explained, labeling plant code, build date, gear ratio and ring gear diameter.
This document is a Ford service-manual style illustration explaining how to read a Ford rear axle identification tag (data/spec plate). The drawing shows a metal tag with a mounting hole and stamped markings, with callouts identifying what each stamped field means. The example tag reads 'S052B' (identified as the plant code), '3.08' (identified as the conventional axle ratio — noted as 3.08 non-locker, while a '3L08' marking would indicate a Traction-Lok limited-slip differential), '8.8' (the ring gear diameter in inches), and '7K 20' (the build date, decoded as year, month, and day). The illustration reference number is AE0206-A. A reader can learn how to decode their own Ford axle tag: where to find the plant code, how to determine whether the axle is an open (conventional) differential or a Traction-Lok limited slip based on whether the ratio marking includes an 'L', how to read the ring gear size (8.8 inches in this example), and how to interpret the build date stamping. The document itself does not state a specific vehicle model or model year applicability.
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Frequently asked questions
- What does the '3.08' stamped on the Ford axle tag mean?
- It is the axle gear ratio. Per the diagram, '3.08' alone indicates a conventional (non-locker) 3.08 ratio, while '3L08' would indicate a Traction-Lok limited-slip differential.
- What does the '8.8' on the axle tag indicate?
- It is the ring gear diameter in inches — in this example, an 8.8-inch ring gear.
- How do I tell if my Ford axle is a Traction-Lok from the tag?
- According to the diagram, an 'L' in the ratio marking (e.g., '3L08') means Traction-Lok; '3.08' without the L is a conventional non-locking differential.
- What does '7K 20' mean on the axle tag?
- It is the build date, stamped in year, month, day format as labeled in the diagram.
- What is 'S052B' on the axle tag?
- The diagram labels this stamping as the plant code.
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