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Yukon USA thick ring-and-pinion set for GM 12-bolt truck differentials in a 3.73 ratio, noted as thick gear for 3.42-and-down carriers. Built for 12-bolt truck housings with an 8.875-inch ring gear diameter, the kit includes 12 ring gear bolts and a 30-spline pinion for correct fitment. Yukon reports these sets exceed OEM specification and are inspected via dimensional, material and fitment testing for reliable axle service.
USA Standard Ring & Pinion Gear Set For GM 12 Bolt Truck in a 3.73 Ratio
