Identifying parts, reading grades, avoiding wrong orders
How part numbers are built, what the suffixes mean, how genuine, OEM-quality and aftermarket lines differ, and how fitment is confirmed from a serial number.
A part number is not a description; it is an identifier that happens to be quoted across several manufacturers, several machine generations and several quality grades, and that is where most ordering errors come from. These guides explain how the numbers are structured, what the suffixes such as F1, F2 and P1 signal, how a serial-number break changes what fits, and how the three grades of part actually differ in service.
All parts knowledge guides
How to identify an excavator part numberWhere the number hides on the machine, and what to send
Genuine, OEM-quality and aftermarket parts comparedWhat each grade really buys you, component by component
Spotting counterfeit excavator partsThe signals that separate a cheap part from a fake one
How to confirm that a part will actually fitModel, serial number and part number — in that order
Reading hydraulic pump part numbersSeries code plus assembly number — and why you need both
Reading diesel injector part numbersMatched to the engine build, not to the machine model
What the suffixes on a part number meanF1, F2, P1 — revision, supplier variant, or a fitment difference
Interchange and supersession, and how they differOne number replaces another; two numbers are equivalent — not the same thing
Serial number breaks, and why the same model uses different partsSame model, same appearance, different part
Undercarriage part numbers, and why measuring beats looking upPitch, link count, tooth form and mounting dimensions
What OEM-quality actually means on a parts quoteA specification claim, not a marketing label
How to read an excavator parts quoteThe omissions are what cost money later