| 10. Unloader |
| 20. Foot Brake |
| 30. Hand Brake |
| 40. Trailer Control |
| 45. Relay |
| 55. Circuit Protection |
| 60. Spring Brake |
| 70. Levelling |
| 75. Load Sensing |
| 80. Air Dryer |
| 90. Clutch Servo |
| 100. Electronic Valves & Others |
| 105. Calipers |
| 110. Compressors |
| 130. Fittings |