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The Yukon 11.5" AAM 3.73 rear ring-and-pinion master kit for GM and Chrysler/Dodge/Ram includes a matched 3.73 ratio gear set with a complete install package and the specified 4.375" OD inner pinion bearing and race (NP673386/NP516549). The kit supplies bearings, seals and the small hardware needed to rebuild the 11.5" differential carrier and restore proper operation.
Yukon Gear 11.5in AAM 3.73 Rear Ring & Pinion Install Kit 4.375in OD Pinion Bearing
