Peugeot 308 Alternator Replacement Parts

The 308 Mk1 ran from 2007 to 2013 and the Mk2 from 2013 onwards, so a 2012 unit comes from a different generation to a 2015 car — crossing that boundary means fitment is not straightforward. The safest approach is to supply your engine code (found on your V5 or via a VIN check) to the breaker, who can confirm whether the donor and recipient share the same code and mounting arrangement. Never assume generation crossover parts will swap directly.

Engine code matters above everything else for an alternator — two 308s from the same year can carry completely different units depending on whether they have a 1.2 PureTech, 1.6 THP, 1.6 BlueHDi, or 2.0 BlueHDi engine. The year narrows things down but the engine code, stamped on your V5 or available through a VIN check, is the single most useful detail you can give a breaker. Always lead with the engine code when requesting a quote.

Trim level does not affect alternator fitment on the 308 — Access, Active, Allure, and GT variants sharing the same engine code will use the same alternator. You may find cosmetic differences on donor vehicles (different interior or exterior finish) but the alternator itself is determined by the engine, not the badge. Give the breaker your engine code and fuel type rather than your trim name.

No — petrol and diesel engines use different alternators, and swapping fuel types is very unlikely to give you a compatible unit even if the cars are from the same model year and generation. Always specify your fuel type alongside your engine code when contacting a breaker, as this immediately rules out a large proportion of unsuitable donor parts. Confirm the exact engine code match before purchasing.

Both sit within the 308 Mk2 generation, which ran from 2013 onwards, but Peugeot made running production changes during this period that can affect ancillary components and their mountings. You should confirm with the breaker against your specific registration and engine code whether a later Mk2 donor unit is a direct swap, rather than assuming all Mk2 alternators are interchangeable. Supplying your engine code gives the breaker the best chance of finding a confirmed match.

Gearbox type can influence ancillary component specifications on some applications, so it is worth flagging to the breaker whether your car is manual or automatic when requesting a quote. In many cases the alternator itself is unaffected by gearbox choice and is determined primarily by the engine code, but confirm this against your registration with the breaker rather than assuming. Providing your full engine code alongside the gearbox type covers all the key fitment details in one go.