We recently (March 2016) ordered four of the complete Timken bearing sets (both #4 and #17) and ten seals (#441151) for the 10" brakes system used on the 23D and sold on Amazon. They had "Made in USA" on the boxes. The extra seals were is case of installation errors or future service.
WBCCI Life Member 5123, AIR 70341, 4CU, WD9EMC
TV - 2012 Dodge 2500 4x4 Cummins HO, automatic, Centramatics, Kelderman level ride airbag suspension, bed shell
2014 31' Classic model 30 twin beds, 50 amp service, 900 watt solar system, Centramatics, Dill TPMS, disc brakes, 16" tires & wheels