Place of Origin:
China
Brand Name:
Cum-mins
Model Number:
4898921
High pressure common rail CP3 fuel pump supplied as a factory rebuilt body under figure 4898921RX (pump builder figure 0445020007). The same casting serves Cummins ISBe, ISDe and QSB 5.9 and 6.7 litre engines, plus a European truck and bus programme that lists it under its own part number. Every rebuilt unit is bench tested on a rail rig and dispatched with a bench record.
| Product Name | High pressure common rail fuel pump, CP3 type |
|---|---|
| Figure Quoted | 4898921RX, the rebuilt release of 4898921 |
| Pump Builder Figure | 0445020007, also written with spaces between the blocks |
| Suffix Meaning | Rebuilt, against a new unit listed under a different pair of letters |
| Family Figures | 4897040, 5254461, 5264248, 5264463, 4897513 |
| Other Side Figures | 5801382396, 84385110, 0986437341, 0445020175 |
| Engines | ISBe, ISDe and QSB, in the five point nine and six point seven litre forms |
| Other Programme | A European truck and bus line uses the same casting under its own figure |
| Control Element | Inlet metering unit bolted to the pump body |
| Core Terms | Returnable within an agreed window, inspected on arrival |
| Packing | Shaft locked, ports capped, foam cradle in a braced carton |
| Two Letters Do The Work | A rebuilt release and a new release share every digit and differ only in the tail, so a quotation typed from memory turns a warranty claim into an argument. |
|---|---|
| One Casting, Three Duties | Road, machine and generator versions come out of the same mould, and the difference lives in the calibration file rather than in the shape of the housing. |
| A Continental Relative | A European truck and bus programme sells the identical casting under its own part number, which is why cross searches produce hits that look nothing alike on paper. |
| Two Number Languages | The engine side counts in seven digits and the pump side in ten, and neither catalogue indexes the other, so both belong on the order. |
| Later Figure In The Same Family | A second engine side figure is quoted for the same casting, and whether it replaces this one depends on the build year rather than on preference. |
| Core Comes Back | A rebuilt body carries a returnable core, and the credit depends on the old unit arriving complete rather than stripped for spares. |
| Caution — The Metering Unit | Most pumps replaced for low rail pressure are sound, and the fault sits in the metering unit or its wiring, both of which cost a fraction of a pump. |
| Caution — Debris After A Failure | Once a pump has ground itself away, the tank, lines and rail hold the evidence, and a replacement fitted without a flush will not last a week. |
| Caution — Return Flow Test | Measuring leak-off before condemning the pump separates a worn body from worn injectors, and it takes minutes with a set of cups. |
| Caution — Fitting Torque | The drive gear is retained by a single use nut, and reusing it lets timing walk under load without setting a code. |
| Related Components | Metering unit, rail pressure sensor, pressure relief valve, filter head, drive gear and nut, leak-off pipes. |
That the unit is a factory rebuilt body rather than a new one.
Only by paying the core charge in full.
It bolts on, but the calibration suits a different duty.
Depends on the build year, so both should be checked against the engine plate.
By leak-off and rail pressure readings taken before removal.
The filter head, and the circuit must be flushed.
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