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Old 07-25-2019, 07:45 AM
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sierradmax's Avatar
Join Date: Sep 2016
Posts: 326
Factory Pinion gear markings?

Curious if anyone can decipher the markings from factory pinion gears? I pulled my 3.21 pinion from my D30 and noticed "4B" and "05" engraved on the head. No where do I see a "+" or "-" to delineate pinion depth.

Same could be said with the new Yukon 4.56 pinion. I know the "196" matches with the ring gear.

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