Caterpillar part numbers starting 1D4
| 1D4538 | Bolt (water lines, upper) | Caterpillar | ||
| 1D4574 | Bolt (filter, oil) | Caterpillar | ||
| 1D4588 | Bolt (drive, governor) | Caterpillar | ||
| 1D4593 | Bolt (housing, flywheel) | Caterpillar | ||
| 1D4597 | Bolt (housing, flywheel) | Caterpillar | ||
| 1D4602 | Bolt (housing, flywheel) | Caterpillar | ||
| 1D4706 | Bolt (water lines, lower) | Caterpillar | ||
| 1D4716 | Nut (water lines, upper) | Caterpillar | ||
| 1D4717 | Nut (expansion tank, water) | Caterpillar |