Service Box Explained: Peugeot, Citroën and DS Parts by VIN
Three brands, one platform family
A Peugeot 308, a Citroen C4 and a DS 4 are close relatives underneath. They share floorpans, engines and a good deal of suspension and cooling hardware, which is why PSA publishes them together rather than running three catalogs.
That is helpful once you trust it. A number you found on a Citroen job last month may well be the same number the Peugeot in front of you needs today, and Service Box will tell you whether it is. What it will not do is confirm that from the model name alone, which is the part worth remembering.
Reading a PSA part number
PSA numbers are usually written in groups, like 16 XXX XXX 80. The spacing is not decoration; it reflects how the number is assembled, and you will see the same number printed without spaces on invoices and packaging. Both forms mean the same thing, so a search that fails with spaces is worth retrying without them.
Most long PSA references end in 80, and PSA publishes no key to the digits, so the number tells you little on its own. Two references that look almost identical can be a current part and one the factory has already replaced, so read the supersession in the catalog before you order.
Where the VIN earns its keep
PSA offered a lot of equipment variation on the same body, especially on cooling, braking and interior trim. Two cars registered in the same month can want different radiators because one left the factory with air conditioning specified and the other did not.
Service Box resolves that from the VIN, which is the reason to start there rather than with the model and year. Our guide on finding a part number walks through the same habit applied to any manufacturer.
Opel and Vauxhall after the merger
Since Stellantis absorbed Opel and Vauxhall, newer cars from those brands sit on PSA platforms and carry PSA-style numbers, while older ones still trace back to General Motors data. A 2016 Astra and a 2022 Astra are not the same lookup problem.
When you meet one of the older cars, the number you want may live in the GM catalog rather than this one. Checking the build year before you start saves a fruitless search.
Documentation alongside parts
PSA designed Service Box to carry workshop documentation as well as the parts catalog, so torque figures and fitting notes sit next to the exploded diagram rather than in a separate manual. How much of that you see depends on the access level you hold.
For parts identification the diagram and the number are the core of it, and that is what a VIN lookup gives you regardless.
Frequently asked questions
Which brands does Service Box cover?
Peugeot, Citroen and DS as the core three, with Opel and Vauxhall models built on PSA platforms since the Stellantis merger.
Why are PSA part numbers written with spaces?
The grouping reflects how the number is built. You will also see it printed without spaces, and both forms refer to the same part.
Can I use a Citroen number on a Peugeot?
Often yes, because the platforms are shared, but confirm it against the VIN rather than assuming. Service Box shows which number the specific car takes.
Do I need a dealer account?
Not with VINsearch. One login opens Service Box for Peugeot, Citroën and DS in the browser, along with the rest of the 53 manufacturer catalogs, from a $5 day pass.