Place of Origin:
China
Brand Name:
Cum-mins
Model Number:
4955254
The 4955254 HX40W turbocharger assembly is a wastegated unit built for six-cylinder Cummins 6CT, 6L and QSL engines used in excavator and dozer installations. It shares its casting with the 4042265 and 4042266 build group and carries the machine-side figure 6743-81-8040 for the 360-class machine. This listing clarifies the number blocks, engine naming and clock-position details that most catalogues leave ambiguous.
| Product Name | Turbocharger Assembly |
|---|---|
| Charger Frame | HX40W, wastegated |
| Quoted Number | 4955254 |
| Same Build Group | 4042265 and 4042266 |
| Machine Side Figures | 6743-81-8040 for the 360-class machine |
| Neighbouring Machine Figures | 4038421 and 4038422, quoted against the 300-class machine |
| Engine Family | Six-cylinder engines badged 6CT, 6L and QSL |
| Duty | Excavator and dozer installation, heavy industrial |
| Boost Control | Wastegate with a preset arm |
| Packing | Foam cradle, ports capped, arm secured for transit |
| Two Blocks Under One Frame | The same casting has been released under an opening group beginning with a four and another beginning with a three, and a search inside one group will never return a figure from the other. |
|---|---|
| The Name That Sends Buyers Wrong | A shorter engine designation appears in many listings for this unit, and that designation belongs to a smaller six that carries a physically smaller charger, so the enquiry arrives one size down. |
| Two Displacements, One Badge | Engines in this group have been sold at two different swept volumes under names that differ by a single character, and the charger is trimmed for the rating rather than for the badge. |
| Machine Side Or Engine Side | The build plate on the machine carries a figure in a completely different format from the one on the charger, and the two catalogues do not cross-reference each other in public. |
| Angle Follows The Installation | A dozer and an excavator use the same core in different clock positions, and the outlet that clears one bonnet will foul the other. |
| Caution — Wastegate Preset | The arm is adjusted before dispatch and has no field setting, so a unit that has been altered to chase a boost complaint cannot be brought back without a bench. |
| Caution — Restriction Upstream | A collapsing inlet hose looks intact at idle and closes under load, which produces exactly the symptom of a failed charger and costs a unit to discover. |
| Caution — Oil Quality | The centre section tolerates heat but not dirty oil, and a machine that has missed services will end a new cartridge long before its warranty period. |
| Caution — Manifold Face | A warped exhaust face leaks under heat and drops boost while sounding normal, so the flange should be checked flat before a replacement goes on. |
| Related Components | Wastegate actuator, cartridge, turbine housing, exhaust gasket, inlet hose, oil feed pipe, drain pipe, flange studs |
Because it was released for a later programme, and catalogues sort by release rather than by casting.
A six-cylinder of the eight-litre class, sold under more than one name.
No, the housing and the wheel are both larger.
Both, from the plate and from the housing.
Only with the outlet clocked to suit.
No, and attempting it voids the setting.
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