Used Peugeot 406 Engine

The 406 ran as a single generation from 1995 to 2004, with a facelift in 1999 that updated styling and some equipment but kept the same basic engine family; however, ancillary brackets, mountings, and wiring loom connections can vary across that facelift boundary, so whether a pre-1999 unit drops straight into a post-1999 car is something you should confirm with the breaker against your registration. The most reliable way to match the engine is to supply your engine code, which you'll find on your V5 or via a VIN check, rather than relying on year alone. Never assume fitment purely on year.

The 1999 facelift is the key boundary here — both cars sit within the same 1995–2004 generation, and the core engine codes carried across, but mounting points, ancillary positions, and ECU wiring can differ between pre- and post-facelift builds. Give the breaker both your registration and your engine code so they can check whether the specific unit they have matches your side of that 1999 line. Don't rely on year alone to confirm fitment.

Trim level — whether LX, SL, SR, Executive, or any other 406 grade — does not affect engine fitment; the engine follows the engine code and fuel type, not the badge on the bootlid. You may find minor cosmetic or ancillary differences between donor and recipient cars, such as different intake trunking or ancillary brackets, but the core unit is the same across trims sharing the same code. Always quote your engine code to the breaker rather than your trim name.

Yes, gearbox type matters — a manual and an automatic version of the same 406 can have different flywheel and rear crank-seal arrangements, meaning an engine pulled from a manual car may not be a straightforward swap into an auto without additional parts. Always tell the breaker whether your car is manual or automatic alongside the engine code. Confirming this upfront saves time and avoids compatibility problems.

Swapping between petrol and diesel is a major undertaking — the engine bays, subframes, engine management systems, and ancillaries are fundamentally different, and such a conversion is outside the scope of a standard used-engine replacement. For a like-for-like swap, match fuel type exactly and confirm the engine code with the breaker against your registration. This is not a job to attempt without specialist knowledge.

The engine code is the single most important detail for matching a 406 engine — it tells the breaker exactly which variant you need, far more reliably than year or trim. You'll find it on your V5 logbook, via a HPI or VIN check, or sometimes stamped on the engine block itself. Providing this code alongside your fuel type and gearbox type gives the breaker everything they need to source the right unit.