| Model Code | Description | |
|---|---|---|
| 01 | 407.100, 407.110, 407.111, 407.200, 407.210, 407.211, 421.124, 421.125, 421.140, 421.141, 737.003, 737.005, 737.008, 737.010 | FRONT AXLE CODE A13 |
| 02 | 421.128, 421.129, 737.004 | FRONT AXLE CODE A13 |
| 03 | 437.110, 437.111, 437.116, 437.120, 437.125, 737.112, 737.121, 737.361 | FRONT AXLE CODE A13 |
| 05 | 427.000, 427.100, 427.101, 427.102, 427.110, 427.111, 427.112, 737.117, 737.118, 737.119, 737.360, 737.363 | FRONT AXLE, RATIO 22:7 CODE A13 |
| 06 | 418.100, 418.102, 737.531 | FRONT AXLE, RATIO 22:7 CODE A13 |
| 07 | 408.100, 408.215, 737.500, 737.501 | FRONT AXLE, RATIO 27:7 CODE A13 |
| 08 | 418.100, 418.102, 737.531 | FRONT AXLE, RATIO 24:7 CODE A14 |
| 09 | 408.101, 737.503 | FRONT AXLE, RATIO 24:7 CODE A11 |