Place of Origin:
China
Brand Name:
Komatsu
Model Number:
4048808
This HE221W wastegated turbocharger assembly serves the four-cylinder Komatsu PC200-8 and its close variants on the 4D107 engine family. The same machine designation was also built with a six-cylinder engine carrying a completely different charger, so the engine plate — not the machine name — settles which unit is required. Both the charger maker numbers (4048808, 4048809, 4048809H, 4955276) and the machine maker number (6751-81-8020) reach the same article, and supply is available as a bare rotating assembly or as a kit with gaskets.
| Product Name | Turbocharger Assembly |
|---|---|
| Charger Frame | HE221W, wastegated |
| Charger Numbers | 4048808, 4048809, 4048809H and 4955276 |
| Machine Number | 6751-81-8020 |
| Engine | 4D107, also written SAA4D107E-1 and 4D107-3 |
| Cylinders | Four |
| Machine Reference | PC200-8 and its close variants, plus a loader build on the same four-cylinder base |
| Other Duty | Truck and industrial builds of the four and five litre class |
| Supply Form | Bare rotating assembly or kit with gaskets, stated on the order |
| Freight | Foam cradle, ports capped, wastegate arm tied |
| Two Engines, One Machine Name | The same machine designation left the works with a four-cylinder and later with a six, and the six carries a charger from a different block altogether, so the machine name alone never settles which unit is required. |
|---|---|
| Two Numbering Systems | One side of the trade asks by charger maker number and the other by machine maker number, and both reach the same article, so a quotation in one form and an order in the other is normal rather than wrong. |
| Tail Variants | 4048809H carries an H for a house build, and 4955276 arrives from the machine side, while 4040560, 4040561, 4040568, 4040569 and 4043584 sit on the neighbouring industrial builds. |
| Machine Side Block | 6751-81-8010, 6751-81-8030, 6751-81-8080, 6751-81-8090 and 6751-81-8190 all sit beside the quoted figure, and the ones marked as kits include the fitting set. |
| Kit Or Bare | A kit figure covers studs, gaskets and often the oil line washers, so comparing it against a bare unit price produces a difference that is not a discount. |
| Same Frame, Many Duties | The frame itself serves machine, loader, truck and industrial builds across two engine families, which is why a photograph of a similar looking charger proves nothing on its own. |
A large share of listings under this machine name carry the six-cylinder figure instead, and the flange pattern differs, so a buyer who orders on the machine name alone receives a unit that will not sit down.
Replacement units are set at the works and the arm should not be shortened to chase a fault, because an over-adjusted arm hides a leaking inlet gasket and then breaks the wheel.
Exhaust soot from a tired injector reaches the new wheel before the warranty period ends, so the injector trim is worth reading before fitting.
A drain pipe bent during removal restricts return flow, and the resulting seal weep is read as a faulty charger rather than a faulty pipe.
Actuator, wastegate, cartridge, inlet gasket, exhaust gasket, oil feed line, oil drain pipe, air cleaner element.
They describe the same charger from two directions, one being the charger maker numbering and the other the machine maker numbering, and all three are quoted against the four-cylinder build.
Because the model has been built with a four-cylinder and with a six, and each carries its own unit from a separate number block. Checking the plate on the engine settles it faster than reading the machine plate.
The charger tag, the engine plate and the exhaust flange, since the flange pattern is what separates the four-cylinder unit from the six-cylinder one.
The same unit under a house build suffix.
Yes, it is listed as a kit rather than a bare charger.
It should be left at the setting it arrived with.
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