Caterpillar part numbers starting IN4
| IN4037 | Manifold (r.h. rear) (water lines, upper) | Caterpillar | ||
| IN4038 | Manifold (l.h. rear) (water lines, upper) | Caterpillar | ||
| IN4637 | Cover assembly (pump assembly, oil) | Caterpillar | ||
| IN4639 | Tube (injector, lines, fuel) | Caterpillar | ||
| IN4666 | Tube | Caterpillar | ||
| IN4674 | Lever (injector, controls, fuel) | Caterpillar | ||
| IN4734 | Clamp (turbocharger, oil lines) | Caterpillar | ||
| IN4859 | Gasket (water lines, lower) | Caterpillar | ||
| IN4860 | Cover (water lines, lower) | Caterpillar |