Inlet Manifold
Applicable to 3500 & 3500S manual
| 1 - Engines in the ranges 425-427 |
| 2 - Engines in the ranges 451, 453, 455, 481, 485 |
 3 - Engines 425, 427 & 451, 455, 481, 485 suffix A |
| 4 - Engines 451, 455, 481, 485, suffix B onwards |
| 5 - 1.5 inch long |
| 6 - 15/16 inch long |
