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  1. Older GM Ring Gear and Pinion

    General Chevy & GM Tech Questions
    I am trying to hunt down a GM Ring Gear and Pinion with the numbers 3873532 ring gear and 143257 pinion. I don't know what model of GM this went in but all my web searches point to maybe some kind of '79 model. This isn't for a vehicle of any sort. Its for a water well drilling rig rotary...
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