Subgroup
| Subgroup | Description | Note |
|---|---|---|
| 001 | SPRINGS AND SUSPENSION | ---- |
| Sa catalog | Description | Note |
| 30933 | VEHICLES HAVING VARIOUS CARRYING POWER | Codes: 937/941/942/943/944/945/946 Codes: X10/X11/X12/X13/X15/X16/X23 |
| 31398 | FRONT AND REAR SPRINGS USED FOR CONTAINER TRAFFIC | Codes: 232/245 Codes: C82/C84 |
| 31465 | H.D. SPRINGS USED WITH OUTSIDE PLANETARY GEAR (APL) AXLE | Codes: 234/239/901 Codes: C28/C37/C39/Z01/Z12 |
| 31565 | H.D. FRONT SPRINGS | Codes: 230/238/243 Codes: C23/C27/Z12 |
| 31574 | FRONT AXLE STABILIZER | Codes: 247 Codes: C40 |
| 31654 | ELIMINATION OF FRONT AXLE STABILIZER | Codes: 291 Codes: C91 |
| 31888 | ELIMINATION OF REAR SPRINGS | Codes: 231/234/239/901 Codes: C34/C37/C38/Z01/Z12 |
| 31981 | ELIMINATION OF FRONT SPRINGS | Codes: 203/230/238/239/243/275 Codes: C05/C20/C23/C26/C27/C28/Z12 |
| 31994 | HARDER FRONT SPRINGS TO 7.5-TON FRONT AXLE | Codes: 238/239/275 Codes: C28 |
| 31995 | HARDER REAR SPRINGS | Codes: 239 Codes: C38 |
| 31997 | FRONT SPRINGS,7.5-TON | Codes: 243 Codes: C26/C27 |
| 32029 | REAR AXLE STABILIZER | Codes: 248 Codes: C42 |
| 32210 | HARDER FRONT SPRINGS USED FOR 7.5-TON FRONT AXLE | Codes: C28 |