Spare parts are parts that you can buy separately to replace old or broken parts in a piece of equipment. They are usually parts that are designed to be easily removed or fitted.
In the future the machines will need spare parts and maintenance.
spare part in British English
noun
a duplicate or replacement component for a machine or other equipment
Examples of 'spare part' in a sentence
spare part
Buying spare parts for my various projects.
Times, Sunday Times (2013)
He was then warned by a female squadron leader that spare parts could take up to five days to arrive in Cyprus.
Times, Sunday Times (2015)
As well as the cars and bikes, you'll be able to buy anything from spare parts and tools to motoring memorabilia.
The Sun (2010)
The ships were also bringing scarce spare parts for medical equipment, such as monitors for CT scanners and dialysis machines.
Times, Sunday Times (2010)
In the case of electronic equipment, for example, inexperienced service engineers often drive up the size of inventories by playing replacement roulette with spare parts.
Davidow, William H. & Uttal, Bro Total Customer Service (The Ultimate Weapon) (1990)
In other languages
spare part
British English: spare part /spɛə pɑːt/ NOUN
Spare parts are parts that you can buy separately to replace old or broken parts in a piece of equipment.