How to read and check a Lenovo FRU number
In short: the FRU (Field Replaceable Unit) number is Lenovo's factory part number - the most reliable way to match exactly the right part for your laptop.
It is printed on the part itself and listed in the Lenovo service manual. If you know your part's FRU, simply type it into the shop search to find the right replacement.
Below we explain where to find it and how to use it.
What is an FRU number?
FRU is the factory designation of a specific Lenovo service part (e.g. a palmrest, battery, cable or fan). Unlike a marketing name, the FRU identifies the part unambiguously - two parts with the same FRU are interchangeable.
The number is usually 7 characters (e.g. 01ER102, 00HW022) or longer (e.g. 5F10S14137, NBX0001K210).
Where to find the FRU number?
- On the part itself - printed or on a label (on the battery, palmrest, module, cable).
- In the Lenovo service manual - the Hardware Maintenance Manual (HMM) for your model lists the FRU of every part.
- By serial / As-Built number - Lenovo links your laptop's serial number to the exact original parts list of that specific unit.
How to use the FRU to choose a part?
The simplest way: type the FRU number into our shop search - it will show the matching replacement. If you don't know the FRU, give us your laptop model or serial number and we will select the right part from our compatibility database.
Frequently asked questions about FRU numbers
What is an FRU number on a Lenovo laptop?
FRU (Field Replaceable Unit) is Lenovo's factory part number that uniquely identifies a service part. Parts with the same FRU are interchangeable, which makes it the most reliable way to choose the right component - more reliable than the marketing name alone.
Where do I find the FRU number of my part?
The FRU number is printed on the part itself or on its label - you'll find it on the battery, palmrest, cable or module. It is also listed in the Lenovo service manual (Hardware Maintenance Manual) for your model and linked to the laptop's serial number.
How do I check which part fits my Lenovo by FRU number?
Type the FRU number into the shop search - it will display the matching product. If you don't have the FRU at hand, give us your laptop model or serial number and we'll select the right part from our compatibility database.
What is the difference between the FRU number and the serial (As-Built) number?
The FRU identifies a specific part, while the serial number identifies the whole laptop. From the serial (As-Built) number Lenovo can read the exact original parts list of that unit together with their FRU numbers - which helps when you cannot read the FRU directly from the part.
Can one FRU number fit several laptop models?
Yes, very often. The same part is frequently shared across several Lenovo models, so one FRU number can fit many laptops. Each product description lists the compatible models.
What if a part has several FRU numbers (alternates)?
Lenovo often lists several equivalent FRU numbers for one part (alternates). They are all mutually compatible, so you can use any of them - our descriptions list the alternate numbers to make matching easier.
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Not sure about the FRU number? Browse our components catalog, or write to us - we'll match the part to your model.