Rockwell Heavy Duty Differential Kits

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Model Carrier Type/Capacity Kit Number
D SERIES 3200-A-1093 Prior to 1985 R-13,000 DRK-4290
  3200-A-1093 Prior to 1985 R-13,000 DRK-4295
  3200-A-1093,3200-R-1110 After 1985 R-13,000 DRK-4300
F105 3200-R-1110 R-15,000 DRK-4315
F106 3200-R-1110 R-15,000 DRK-4315
F140 3200-R-1110 R-15,000 DRK-4310
F145 3200-R-1110 R-15,000 DRK-4310
F146 3200-R-1110 R-15,000 DRK-4310
F147 3200-R-1110 R-15,000 DRK-4310
H-170 3200-N-924 R-17,500 DRK-4325
H-172 3200-Y-1091 R-17,500 DRK-4330
R-170 All Except 7.40 Ratio R-23,000 DRK-50
  B-3200-G-605 FORD Series 732,001 & Up   DRK-50A
  3200-G-605,3200-E-603 7.40 Ratio Only R-23,000 DRK-4130
RS-13-120   R-13,000 DRK-218
RS-15-120   R-15,000 DRK-218
RS-15-210 3200-H-1568 R-15,000 DRK-4360
RS-16-140 3200-M-1547 R-16,000 DRK-4345
  3200-L-1676, 3200-Q-1785, 3200-S-1865   DRK-4350
RS-16-141   R-16,000 DRK-217R
RS-17-140 3200-M-1547 R-17,000 DRK-4345
  3200-L-1676, 3200-Q-1785, 3200-S-1865   DRK-4350
  3200-L-1676, 3200-Q-1785   DRK-215
RS-17-141   R-17,000 DRK-217R
RD/RP-17-145 Before 11/93 RF-17,000 DRK-217F
  After 11/93   DRK-4396
RR-17-145   RR-17,000 DRK-217R
RS-17-220   R-17,000 DRK-216
RS-19-141   R-19,000 DRK-217R
RR-20-140 3200-L-1676, 3200-Q-1785 RR-20,000 DRK-217R
  3200-S-1865    
RD/RP-20-145 3200-G-1645, 3200-X-1662 RF-20,000 DRK-217F
  3200-T-1814, 3200-V-1816    
  (Before 11/93)    
  3200-G-1645, 3200-X-1662   DRK-4396
  3200-T-1814, 3200-V-1816    
  (After 11/93)    
  3200-L-1624, 3200-M-1677   DRK-4405
  3200-P-1888, 3200-R-1890    
  3200-D-1902    
  (Before 11/93)    
  3200-L-1624, 3200-M-1677   DRK-4406
  3200-P-1888, 3200-R-1890    
  3200-D-1902    
  (After 11/93)    
RR-20-145 3200-R-1500 RR-20,000 DRK-224
  3200-M-1547, 3200-X-1558   DRK-4390
  3200-G-1879    
  3200-L-1676, 3200-Q-1785    
  3200-S-1865    
RS-21-145 3200-R-1500 R-21,000  
  3200-M-1547, 3200-X-1558    
  3200-G-1879    
  3200-L-1676, 3200-Q-1785   DRK-217R
  3200-S-1865    
RS-21-230   R-21,000 DRK-225
RD/RP-22-145 3200-G-1645, 3200-X-1662 RF-22,000 DRK-217F
  3200-T-1814, 3200-V-1816    
  (Before 11/93)    
  3200-G-1645, 3200-X-1662   DRK-4396
  3200-T-1814, 3200-V-1816    
  (After 11/93)    
  3200-L-1624, 3200-M-1677   DRK-4405
  3200-P-1888, 3200-R-1890    
  3200-D-1902    
  (Before 11/93)    
  3200-L-1624, 3200-M-1677   DRK-4406
  3200-P-1888, 3200-R-1890    
  3200-D-1902    
  (After 11/93)    
RR-22-145 3200-X-1558, 3200-G-1879 RR-22,000 DRK-4390
  3200-L-1676, 3200-Q-1785   DRK-217R
  3200-S-1865    
RD/RP-23-160 3200-P-1628, 3200-J-1648 RF-23,000 DRK-4420
  3200-K-1701, 3200-M-1703   DRK-4422
  3200-X-1818, 3200-Z-1820    
  3200-V-1894    
  3200-W-1713, 3200-Y-1819   DRK-4423
  3200-W-1895    
RR/RS-23-160 3200-C-1511, 3200-Z-1560 R-23,000 DRK-4415
  3200-T-1658, 3200-V-1660    
  3200-P-1706   DRK-4426
  3200-R-1708, 3200-V-1712   DRK-4428
  3200-C-1823, 3200-E-1825    
  3200-T-1892, 3200-Y-1897    
RS-23-161 3200-C-1511, 3200-Z-1560 R-23,000 DRK-4415
  3200-T-1658, 3200-V-1660    
  3200-P-1706   DRK-4426
  3200-R-1708, 3200-V-1712   DRK-4428
  3200-C-1823, 3200-E-1825    
  3200-T-1892, 3200-Y-1897    
RD-23-180 3200-W-1791,3200-J-1804 RR-23,000 DRK-4438
  3200-A-1899    
  6.83, 7.17, 7.40 Ratios Only    
RS-23-180 3200-U-1399 (All Except 6.83, 7.17 & 7.40) R-23,000 DRK-4435
  (6.83, 7.17 & 7.40 Ratios)   DRK-4436
  3200-W-1791, 3200-J-1804, 3200-A-1899   DRK-4437
  (All Except 6.83, 7.17 & 7.40)    
RS-23-240 3200-F-1566 R-23,000 DRK-4375
RR-24-180 3200-U-1399 (All Except 6.83, 7.17 & 7.40) RR-24,000 DRK-4435
  (6.83, 7.17 & 7.40 Ratios)   DRK-4436
RD/RP-26-160 3200-P-1628, 3200-J-1648 RF-26,000 DRK-4420
  3200-K-1701, 3200-M-1703   DRK-4422
  3200-X-1818, 3200-Z-1820    
  3200-V-1894    
  3200-W-1713, 3200-Y-1819   DRK-4423
  3200-W-1895    
RR/RS-26-160 3200-C-1511, 3200-Z-1560 RR-26,000 DRK-4415
  3200-T-1658, 3200-V-1660    
  3200-P-1706   DRK-4426
  3200-R-1708, 3200-V-1712   DRK-4428
  3200-C-1823, 3200-E-1825    
  3200-T-1892, 3200-Y-1897    
RR-26-180 3200-U-1399 (All Except 6.83, 7.17 & 7.40) RR-26,000 DRK-4435
  (6.83, 7.17 & 7.40 Ratios)   DRK-4436
RR-29-180 3200-U-1399 (All Except 6.83, 7.17 & 7.40) RR-29,000 DRK-4435
  (6.83, 7.17 & 7.40 Ratios)   DRK-4436
RT-34-145 Before 11/93 RF-34,000 DRK-217F
  After 11/93   DRK-4396
    RR-34,000 DRK-217R
RT-40-140 3200-L-1676, 3200-Q-1785 RR-40,000 DRK-217R
  3200-S-1865    
  3200-G-1645,3200-T-1814 Prior to 11/93 RF-40,000 DRK-4355
  3200-G-1645,3200-T-1814 After 11/93   DRK-4356
RT-40-145 3200-G-1645, 3200-X-1662 RF-40,000 DRK-217F
  3200-T-1814, 3200-V-1816    
  (Before 11/93)    
  3200-G-1645, 3200-X-1662   DRK-4396
  3200-T-1814, 3200-V-1816    
  (After 11/93)    
  3200-L-1624, 3200-M-1677   DRK-4405
  3200-P-1888, 3200-R-1890    
  3200-D-1902    
  (Before 11/93)    
  3200-L-1624, 3200-M-1677   DRK-4406
  3200-P-1888, 3200-R-1890    
  3200-D-1902    
  (After 11/93)    
  3200-R-1500 RR-40,000 DRK-224
  3200-M-1547, 3200-X-1558   DRK-4390
  3200-G-1879    
  3200-L-1676, 3200-Q-1785   DRK-217R
  3200-S-1865    
RT-44-145 3200-G-1645, 3200-X-1662 RF-44,000 DRK-217F
  3200-T-1814, 3200-V-1816    
  (Before 11/93)    
  3200-G-1645, 3200-X-1662   DRK-4396
  3200-T-1814, 3200-V-1816    
  (After 11/93)    
  3200-L-1624, 3200-M-1677   DRK-4405
  3200-P-1888, 3200-R-1890    
  3200-D-1902    
  (Before 11/93)    
  3200-L-1624, 3200-M-1677   DRK-4406
  3200-P-1888, 3200-R-1890    
  3200-D-1902    
  (After 11/93)    
  3200-X-1558, 3200-G-1879 RR-40,000 DRK-4390
  3200-L-1676, 3200-Q-1785   DRK-217R
  3200-S-1865    
RT-46-160 3200-P-1628, 3200-J-1648 RF-46,000 DRK-4420
  3200-K-1701, 3200-M-1703   DRK-4422
  3200-X-1818, 3200-Z-1820    
  3200-V-1894    
  3200-W-1713, 3200-Y-1819   DRK-4423
  3200-W-1895    
  3200-C-1511, 3200-Z-1560 RR-46,000 DRK-4415
  3200-T-1658, 3200-V-1660    
  3200-P-1706   DRK-4426
  3200-R-1708, 3200-V-1712   DRK-4428
  3200-C-1823, 3200-E-1825    
  3200-T-1892, 3200-Y-1897    
RT-48-180 3200-U-1399 (All Except 6.83, 7.17 & 7.40) RR-48,000 DRK-4435
  (6.83, 7.17 & 7.40 Ratios)   DRK-4436
  3200-W-1791, 3200-J-1804, 3200-A-1899   DRK-4437
  3200-W-1791,3200-J-1804   DRK-4438
  3200-A-1899    
  6.83, 7.17, 7.40 Ratios Only    
  3200-M-1625 RF-48,000 DRK-4440
  3200-M-1833   DRK-4441
  3200-M-1833   DRK-4442
  6.83, 7.17, 7.40 Ratios Only    
RT-48-380 3200-M-1625 RF-48,000 DRK-4440
  3200-M-1833   DRK-4441
  3200-M-1833   DRK-4442
  6.83, 7.17, 7.40 Ratios Only    
  3200-M-1833 RR-48,000 DRK-4443
  3200-M-1833   DRK-4444
  6.83, 7.17, 7.40 Ratios Only    
  3200-M-1625   DRK-4450
RT-52-160 3200-P-1628, 3200-J-1648 RF-52,000 DRK-4420
  3200-K-1701, 3200-M-1703   DRK-4422
  3200-X-1818, 3200-Z-1820    
  3200-V-1894    
  3200-W-1713, 3200-Y-1819   DRK-4423
  3200-W-1895    
  3200-C-1511, 3200-Z-1560 RR-52,000 DRK-4415
  3200-T-1658, 3200-V-1660    
  3200-P-1706   DRK-4426
  3200-R-1708, 3200-V-1712   DRK-4428
  3200-C-1823, 3200-E-1825    
  3200-T-1892, 3200-Y-1897    
RT-52-180 3200-M-1625 RF-52,000 DRK-4440
  3200-M-1833   DRK-4441
  3200-M-1833   DRK-4442
  6.83, 7.17, 7.40 Ratios Only    
  3200-U-1399 (All Except 6.83, 7.17 & 7.40) RR-52,000 DRK-4435
  (6.83, 7.17 & 7.40 Ratios)   DRK-4436
  3200-W-1791, 3200-J-1804, 3200-A-1899   DRK-4437
  (All Except 6.83, 7.17 & 7.40)    
  3200-W-1791,3200-J-1804   DRK-4438
  3200-A-1899    
  6.83, 7.17, 7.40 Ratios Only    
RT-52-380 3200-M-1625 RF-52,000 DRK-4440
  3200-M-1833   DRK-4441
  3200-M-1833   DRK-4442
  6.83, 7.17, 7.40 Ratios Only    
  3200-M-1833 RR-52,000 DRK-4443
  3200-M-1833   DRK-4444
  6.83, 7.17, 7.40 Ratios Only    
  3200-M-1625   DRK-4450
RT-58-180 3200-M-1625 RF-58,000 DRK-4440
  3200-M-1833   DRK-4441
  3200-M-1833   DRK-4442
  6.83, 7.17, 7.40 Ratios Only    
  3200-U-1399 (All Except 6.83, 7.17 & 7.40) RR-58,000 DRK-4435
  (6.83, 7.17 & 7.40 Ratios)   DRK-4436
  3200-W-1791, 3200-J-1804, 3200-A-1899   DRK-4437
  (All Except 6.83, 7.17 & 7.40)    
  3200-W-1791, 3200-J-1804   DRK-4438
  3200-A-1899    
  6.83, 7.17, 7.40 Ratios Only    
RT-58-380 3200-M-1625 RF-58,000 DRK-4440
  3200-M-1833   DRK-4441
  3200-M-1833   DRK-4442
  6.83, 7.17, 7.40 Ratios Only    
  3200-M-1833 RR-58,000 DRK-4443
  3200-M-1833   DRK-4444
  6.83, 7.17, 7.40 Ratios Only    
  3200-M-1625   DRK-4450
RT-70-380 3200-M-1625 RF-70,000 DRK-4440
  3200-M-1833   DRK-4441
  3200-M-1833   DRK-4442
  6.83, 7.17, 7.40 Ratios Only    
  3200-M-1833 RR-70,000 DRK-4443
  3200-M-1833   DRK-4444
  6.83, 7.17, 7.40 Ratios Only    
  3200-M-1625   DRK-4450
L100 Early w/1 3/8" I.D. Pinion Rear Bearing &  R-18,500 DRK-9R
  Ratios Above 4.63:1    
  Late w/1 3/8" I.D. Pinion Rear Bearing &    DRK-9RB
  Ratios Above 4.63:1    
  Late w/1 3/8" I.D. Pinion Rear Bearing &    DRK-9RC
  Ratios of 4.63:1 & Below    
L100A Early w/1 3/16" I.D. Pinion Rear Bearing &  R-18,500 DRK-9R
  Ratios Above 4.63:1    
  Late w/1 3/8" I.D. Pinion Rear Bearing &    DRK-9RB
  Ratios Above 4.63:1    
  Late w/1 3/8" I.D. Pinion Rear Bearing &    DRK-9RC
  Ratios of 4.63:1 & Below    
LT100   R- DRK-9RC
R100 Late R-23,000 DRK-172R
R100A Late R-23,000 DRK-172R
SL100 w/Carrier 3200R1032 (Malleable) &  RF-34,000 DRK-194F
  Carrier 3200L1078 (Aluminum)    
  w/Carrier 3200N1314 (Malleable)  RR-34,000 DRK-194RB
  & Carrier 3200T1346 (Aluminum)    
SL100P w/Carrier 3200R1032 (Malleable) &  RF-34,000 DRK-194F
  Carrier 3200L1078 (Aluminum)    
  w/Carrier 3200N1314 (Malleable) &  RR-34,000 DRK-194RB
  Carrier 3200T1346 (Aluminum)    
SLR100   R- DRK-194RB
SQ100 w/Carrier 3200R1032 (Malleable) &  RF-38,000 DRK-194F
  Carrier 3200L1078 (Aluminum)    
  w/Carrier 3200N1314 (Malleable) &  RR-38,000 DRK-194RB
  Carrier 3200T1346 (Aluminum)    
SQ100P   RF-38,000 DRK-194F
  w/Carrier 3200N1314 (Malleable) &  RR-38,000 DRK-194RB
  Carrier 3200T1346 (Aluminum)    
SQR100 w/Carrier 3200R1032 (Malleable) &  RF-44,000 DRK-194F
  Carrier 3200L1078 (Aluminum)    
  w/Carrier 3200N1314 (Malleable) &  RR-44,000 DRK-194RB
  Carrier 3200T1346 (Aluminum)    
SQR100P w/Carrier 3200R1032 (Malleable) &  RF-44,000 DRK-194F
  Carrier 3200L1078 (Aluminum)    
  w/Carrier 3200N1314 (Malleable) &  RR-44,000 DRK-194RB
  Carrier 3200T1346 (Aluminum)    
L101 Early w/1 3/16" I.D. Pinion Rear Bearing &  R-18,500 DRK-9R
  Ratios Above 4.63:1    
  Late w/1 3/8" I.D. Pinion Rear Bearing &     DRK-9RB
  Ratios of Above 4.63:1    
  Late w/1 3/8" I.D. Pinion Rear Bearing &    DRK-9RC
  Ratios of 4.63:1 & Below    
R101 Late R-23,000 DRK-172R
RA101A Late R-23,000 DRK-172R
L110 Early w/1 3/16" I.D. Pinion Rear Bearing &  R-18,500 DRK-9R
  Ratios Above 4.63:1    
  Late w/1 3/8" I.D. Pinion Rear Bearing &    DRK-9RB
  Ratios of 4.63:1    
  Late w/1 3/8" I.D. Pinion Rear Bearing &    DRK-9RC
  Ratios of 4.63:1 & Below    
L110A Early w/1 3/16" I.D. Pinion Rear Bearing &  R-18,500 DRK-9R
  Ratios Above 4.63:1    
  Late w/1 3/8" I.D. Pinion Rear Bearing &     DRK-9RB
  Ratios of Above 4.63:1    
  Late w/1 3/8" I.D. Pinion Rear Bearing &    DRK-9RC
  Ratios of 4.63:1 & Below    
R110 Late R-23,000 DRK-172R
R110A Late R-23,000 DRK-172R
R112 Late R-23,000 DRK-172R
R113 Late R-23,000 DRK-172R
R114 Late R-23,000 DRK-172R
R115 Late R-23,000 DRK-172R
H120 Early w/ 3/16" I.D. Pinion Rear Bearing &  R-17,000 DRK-9R
  Ratios Above 4.63:1    
  Late w/1 3/8" I.D. Pinion Rear Bearing &  R-17,000 DRK-9RB
  Ratios of Above 4.63:1    
  Late w/1 3/8" I.D. Pinion Rear Bearing &  R-17,000 DRK-9RC
  Ratios of 4.63:1 & Below    
R120 Late R-23,000 DRK-172R
QT140   R-22,000 DRK-600
R140 Late R-23,000 DRK-172R
RT140 Late R-23,000 DRK-172R
U140 Late R-23,000 DRK-172R
R141 Late R-23,000 DRK-172R
PL143 Late R-18,500 DRK-172R
QT143   R-22,000 DRK-600
R143 Late R-23,000 DRK-172R
QT145   R-22,000 DRK-600
QT148   R-22,000 DRK-600
R155 Late R-23,000 DRK-172R
R164 Late R- DRK-172R
R170 Exc. Ford from Ser 732,001 R-23,000 DRK-50
  w/Ford from Ser. 732,001   DRK-50A
RL170 Exc. Ford from Ser 732,001 R-21,000 DRK-50
  w/Ford from Ser. 732,001   DRK-50A
S170 Exc. Ford from Ser 732,001 R-26,000 DRK-50
  w/Ford from Ser. 732,001   DRK-50A
SR170   RF-48,000 DRK-203F
    RR-48,000 DRK-50
  3200-J-1076,3200-G-1255 RF-46-48,000 DRK-4125
  7.40 Ratios Only    
  3200-X-1324   DRK-4135
  3200-M-1625   DRK-4145
  7.40 Ratios Only    
  3200-G-605,3200-E-603 RR-23,000 DRK-4130
  7.40 Ratios Only    
SU170   RF-58,000 DRK-203F
    RR-58,000 DRK-50
  3200-J-1076,3200-G-1255 RF-58,000 DRK-4125
  7.40 Ratios Only    
  3200-G-605,3200-E-603 RR-58,000 DRK-4130
  7.40 Ratios Only    
  3200-X-1324 RF-58,000 DRK-4135
  3200-M-1625   DRK-4145
  7.40 Ratios Only    
SW170   RF-70,000 DRK-203F
    RR-70,000 DRK-50
  3200-J-1076,3200-G-1255 RF-70,000 DRK-4125
  7.40 Ratios Only    
  3200-X-1324 RF-70,000 DRK-4135
  3200-M-1625   DRK-4145
  7.40 Ratios Only    
  3200-G-605,3200-E-603 RR-70,000 DRK-4130
  7.40 Ratios Only    
W170   R-38-42,000 DRK-50
R171 Exc. Ford from Ser 732,001 R-23,000 DRK-50
  w/Ford from Ser. 732,001   DRK-50A
R173 Exc. Ford from Ser 732,001 R-23,000 DRK-50
  w/Ford from Ser. 732,001   DRK-50A
PR250   R- DRK-172R
SPR250 Ratios Above & Below 4.63:1 RF- DRK-900F/
      DRK-900FA
  Ratios Above 4.63:1 RR- DRK-9RB
  Ratios 4.63:1 and Below RR- DRK-9RC
SR270 w/Oil Pump and Inter Axle Diff RF-46-48,000 DRK-203F
  3200-J-1076,3200-G-1255   DRK-4125
  7.40 Ratios Only    
  3200-X-1324 RF-46-48,000 DRK-4135
  3200-M-1625   DRK-4145
  7.40 Ratios Only    
SU270 w/Oil Pump and Inter Axle Diff RF-48,000 DRK-203F
  3200-J-1076,3200-G-1255 RF-58,000 DRK-4125
  7.40 Ratios Only    
  3200-X-1324   DRK-4135
  3200-M-1625   DRK-4145
  7.40 Ratios Only    
SW270 w/Oil Pump and Inter Axle Diff RF-70,000 DRK-203F
  3200-J-1076,3200-G-1255   DRK-4125
  7.40 Ratios Only    
  3200-X-1324   DRK-4135
  3200-M-1625   DRK-4145
  7.40 Ratios Only    
SR280 w/Oil Pump and Inter Axle Diff RF-46-48,000 DRK-203F
  3200-J-1076,3200-G-1255   DRK-4125
  7.40 Ratios Only    
  3200-X-1324   DRK-4135
  3200-M-1625   DRK-4145
  7.40 Ratios Only    
SU280 w/Oil Pump and Inter Axle Diff RF-58,000 DRK-203F
  3200-J-1076,3200-G-1255   DRK-4125
  7.40 Ratios Only    
  3200-X-1324   DRK-4135
  3200-M-1625   DRK-4145
  7.40 Ratios Only    
SW280 w/Oil Pump and Inter Axle Diff RF-70,000 DRK-203F
  3200-J-1076,3200-G-1255   DRK-4125
  7.40 Ratios Only    
  3200-X-1324   DRK-4135
  3200-M-1625   DRK-4145
  7.40 Ratios Only    
PR300 Late R- DRK-172R
PS300 Late R- DRK-172R
PS300W Late F- DRK-172R
PS311 Late F- DRK-172R
PS350   F- DRK-172R
PR400   R-48,000 DRK-172R
PR400N   R- DRK-172R
SPR400 Ratios Above & Below 4.63:1 RF- DRK-900F/
      DRK-900FA
  Ratios Above 4.63:1 RR- DRK-9RB
  Ratios 4.63:1 and Below   DRK-9RC
PR500   R- DRK-172R
FDS1807 #3200H606 F-21,000 DRK-172R
FDS1808 #3200G969 F-21,000 DRK-172R
FDS2100 #3200G969 F-21,000 DRK-172R
FDS2101 #3200H606 F-21,000 DRK-172R
SFDD4640 3800F604 Fits Front & Rear RF+RR-65,000
  3800-F-604 RF-65,000 DRK-4255
  3200-C-1225 RF-65,000 DRK-4260
  3200-C-1625