Place of Origin:
China
Brand Name:
Isuzu
Model Number:
8-97605946-7
This HP4 high pressure common rail fuel pump is specified for the Isuzu 6HK1 7.8 litre engine in medium duty truck chassis and in the SY365H excavator rating. The pump figure 294050-0423 and the engine figure 8-97605946-7 are a matched pair, and both must be confirmed against the plate before ordering. Four separate calibrations serve this engine family, and they are not interchangeable.
| Product Name | Common rail fuel injection pump, HP4 family |
|---|---|
| Pump Figure | 294050-0423, also written 2940500423 |
| Engine Figure | 8-97605946-7, written 8976059467 without dashes |
| Sister Calibrations | 294050-0421 and 294050-0422 with 8-97605946-6, and 294050-0424 with 8-97605946-8 |
| Engine | 6HK1 six cylinder, 7.8 litre class, turbocharged and charge cooled |
| Truck Fitment | NPR and NQR medium duty chassis, and the F series |
| Machine Fitment | SY365H excavator and other frames using the same rating |
| Control | Suction control valve on the inlet, rail pressure closed loop |
| Drive | Gear driven, keyed coupling, flange mounted |
| Condition Offered | New, and rebuilt with a bench pressure report |
| Packing | Port caps, inlet valve protected, foam blocked carton |
| Four Pumps, One Engine | This engine is served by four separate high pressure pumps across its life: one for the early excavator build, one for the truck chassis, one for the later excavator build and one for the final emission step. None of them substitutes for another. |
|---|---|
| The Truck Figure | The pump on this page belongs to the medium duty chassis and to one excavator rating. A buyer who owns the early excavator will be quoted a different block entirely. |
| Four Digits In A Row | Twenty one, twenty two, twenty three and twenty four are separate calibrations, and resellers routinely quote the whole row as if any of them would do. |
| Engine Figure Pairing | The last digit of the engine figure must move with the last digit of the pump figure. A mixed pair is the most common wrong shipment in this family. |
| Rebuilt Units | Rebuilt pumps circulate under the same figures with a different suction valve. The valve must match the calibration rather than the casting. |
| Related Components | Common rail, injectors, rail pressure sensor, suction control valve, high pressure pipes, filter assembly. |
No. Four different pumps are used across this engine family, and each is tied to a specific build and calibration.
By the pump plate, not the engine name. The plate carries both the pump figure and the engine figure.
No. Each belongs to its own engine figure and calibration.
The high pressure union, filters and a rail flush.
The suction valve does not match the calibration.
No coding is written into the pump body.
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