Place of Origin:
China
Brand Name:
Cum-mins
Model Number:
QSK45
A remanufactured QSK45 engine assembly: a twelve-cylinder, 45-litre diesel built on a 159 mm bore and 190 mm stroke, rated from 1600 to 2250 hp at 1900 rpm with torque reaching 7871 N·m at 1500 rpm. Supplied on exchange, with the removed engine returned as the core. This page separates the V12 QSK45 from the six-cylinder QSK23 it is often confused with, and sets out the warranty and core terms a genuine remanufactured unit carries.
| Product Name | Remanufactured Engine Assembly |
|---|---|
| Engine Model | QSK45, built as C and G ratings |
| Configuration | V12, four stroke, turbocharged and aftercooled |
| Displacement | 45 L |
| Bore and Stroke | 159 mm by 190 mm |
| Output Ladder | 1193 kW, 1491 kW and 1677 kW at 1900 rpm |
| Torque | 6836 N·m and 7871 N·m, quoted at 1500 rpm |
| Supply Basis | Exchange, core returned |
| Assembly Numbers | 5616004, 4089143, 5374098, 3088386 |
| Control Module | CM500, part 4921411 or 3330511 |
| Injection | Electronically controlled, injector 4326780 |
| Running Hours | Zero on a remanufactured unit |
| Warranty Benchmark | Two years or 2000 hours on genuine reman |
| Packaging | Heavy timber cradle, sealed, ports blanked, shock tags |
| Where It Sits In The Range | QSK23 is a six on a 170 mm bore; this engine is a twelve on 159 mm; QSK60 is a sixteen on the same bore and stroke |
|---|---|
| Same Part Across Models | Connecting rod 3640518 is sold for QSK45, QSK60 and QSK95 alike, with 3644676 and 3643083 in the same listings |
| Injection Hardware | Injector 4326780 is listed against QSK45 and QSK60 together, so the number alone does not fix the engine |
| Maker Reman Benchmark | The factory program rebuilds through a five-stage process and backs the result with two years or 2000 hours — the term to measure any other offer against |
Descriptions of this model as a four-and-a-half-litre, sixteen-valve engine of under 120 kW are borrowed from a completely different family. The giveaway is that a 45-litre block cannot be that small.
The ladder spans close to five hundred kilowatts between the lowest and highest build, all at the same governed speed. The plate carries the build, not the family name.
Figures in the tens of thousands of yuan for a complete forty-five-litre engine belong to deposits, core charges or single components. A genuine unit sells for an order of magnitude more.
A block of this size is worth real money as a core, so the credit should be agreed in writing before the old engine leaves the yard rather than discovered on arrival.
An exchange unit must match on arrangement and accessory drive. A core from a generator build will not satisfy a haul truck order, even though both are the same family.
Connecting rod, piston and liner kit, cylinder head, gasket set, bearings, injector, high pressure pump, turbocharger, oil pump, water pump, CM500 module.
Twelve, arranged in two banks, on a bore of 159 mm and a stroke of 190 mm. The number in the model refers to litres rather than to cylinder count, which is why the six-cylinder QSK23 carries a larger bore. A four-and-a-half-litre version is a light-duty four-cylinder, not this engine.
The factory exchange programme offers two years or 2000 hours, with parts, labour and progressive damage inside that term, and a serious independent reman should be willing to put comparable cover in writing. A ninety-day verbal promise is not a warranty — it is a hope, and it measures the seller's confidence.
Because that figure is not the engine. On a unit this size the numbers in that range are deposits, core credits, or individual subassemblies such as a head or a pump, and the listing is written to capture search traffic. Ask for a quotation naming the arrangement number, freight basis and core credit, and expect a different order of magnitude.
3640518, also sold for QSK60 and QSK95.
CM500, listed as 4921411 or 3330511.
1677 kW, or 2250 hp, at 1900 rpm.
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