FAQ

Q1: Is a Stage III label on a 2024 engine a sign of old stock?

Not in this power class. The fourth stage of the national non road standard was written for machines up to and including 560 kW, and the class above that line was deferred. A 760 hp unit delivers 566.7 kW, so it sits above the boundary and Stage III remains the stage it is supplied against. The label describes the regulation, not the crate age.

Q2: How can a buyer confirm the engine really is new and really is 2024?

Three artefacts do the work: the engine plate photograph with its serial legible, the build date on the label rather than on an invoice, and the emission document that travels with it. Compare the serial on the plate with the serial printed on the packing list. A crate without a plate photograph has no build year worth trusting.

Q3: What does the C in C760 stand for, and does it limit the application?

The letter marks a construction rating, which is why the same block appears as C860 and C950 for heavier duty and as G suffixes for generator drive. A construction rating carries a torque curve shaped for load swings, so a G rated unit in place of a C rated one changes how the machine responds even at matching horsepower. Match the letter before the number.

Q4: Are the injector numbers unique to this engine?

No, the sets 4062090, 4077076, 4902827 and 4062091, 4077077, 4902828 are listed for QSK60 as well.

Q5: Which gasket number covers the head joint?

4095440 is the head gasket, with 4089360 and 4089361 as the upper and lower sets.

Q6: What should the enquiry include?

The machine model, the plate serial and the intended duty.