Spicer Tandem Drive Axle: DS_RS461, 462, 463, 521, 581, DT_RT_DP_RP461, 462, 463, 521, 581, 601, 651 - Manual (Page 46)

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Appendix
Differential Carrier Assemblies
These assemblies are complete, less input yoke and dual range shift units.
Single Reduction Models Dual Range Models
DS/RS461-P / 521-P / 581-P DT/RT461-P / 521-P / 501-P / 651-P
Gear Ratio Forward Assy Rear Assy Gear Ratio Forward Assy Rear Assy
36 Involute Splines 36 Involute Splines 36 Involute Splines
3.55 952103 952104
3.70 674514 674520 3.70/5.04 674609 674610
3.90 674611 674612 3.90/5.31 674828 674829
4.11 674515 674521 4.11/5.60 674526 674531
4.33 674516 674522 4.33/5.90 674527 674532
4.56 674517 674523 4.56/6.20 674528 674533
4.88 674518 674524 4.88/6.64 674529 674534
5.29 674613 674614
5.43 674519 674525 5.43/7.39 674530 674535
6.17 674707 674709 6.17/8.40 674912 674908
6.50 674708 674710
6.67 213370 213371