Table of contents03 sections
DefinitionAftermarket
The aftermarket is the market for everything a product needs after the initial sale: spare parts, consumables, accessories, repair, maintenance and modernisation. It is larger and higher-margin than new business — and in many industries it is not dominated by the manufacturer but by independent providers.
What belongs to the aftermarket
Original and replacement parts, consumables and operating fluids, accessories and retrofits, repair and maintenance services, modernisation, training, technical support and remote diagnosis. At end of life come refurbishment, resale and recovery.
The term is often used interchangeably with after sales. The useful distinction: after sales describes the function from the manufacturer's point of view, aftermarket describes the market — including everything competitors, independent workshops and parts distributors do in it.
Who serves it
Alongside the manufacturer with its own service and contracted partners stands a whole ecosystem: independent workshops and service providers, parts distributors, online marketplaces, replacement-part manufacturers and specialist refurbishers. In many industries this independent part is the larger one — and it grows fastest where the manufacturer does not itself offer diagnosis and part identification.
That is the decisive connection. An operator who cannot quickly work out which part they need will find someone who tells them. Whoever answers that question sells the part afterwards — regardless of who built the machine.
The number that shows the need to act
The most telling metric is your own share of the aftermarket for your own installed base: how much of the total parts and service demand of the machines you built runs through you? Most companies do not have this number, because it requires a market estimate rather than an internal report. That is exactly why it is so effective — it makes visible what otherwise stays invisible.
In short
The aftermarket covers spare parts, consumables, accessories, repair and modernisation after the initial sale. It carries higher margin than new business — but is frequently served by independent providers rather than the manufacturer.
