TO: All Dana Aftermarket Group Spicer® Service Parts Heavy Axle Customers. Affected Models: All D344, 404, 405, 454, DSP40, DSP41, DST40, DST41, DSH40, DSH44. Dana Input Shaft 129770 which is sold as kit 510593 has now been discontinued and is directly replaced by the Input Shaft number 132447, which is sold as kit 504026.
