Used Peugeot 106 Engine

The 106 ran across two generations: the Phase 1 from 1991 to 1996, and the Phase 2 facelift from 1996 to 2004, and engines within the same phase are generally the most straightforward swap candidates. The single most important detail is the engine code, found on your V5 or via a VIN check, as mechanical compatibility follows the code rather than the model year badge. An engine crossing the Phase 1 to Phase 2 boundary may have differences in ancillary fittings or mountings, so name the boundary year to your breaker and ask them to confirm against both registrations before buying.

A 1994 car is Phase 1 and a 1999 car is Phase 2, so you are crossing the 1996 facelift boundary, which means fitment is not guaranteed even if the engine codes look similar on paper. Share both registration numbers and engine codes with the breaker so they can check whether ancillary components, mounts, and loom connections align before you commit. Never assume a cross-generation swap is a straight fit without that confirmation.

Trim level does not affect engine fitment; what matters is the engine code, fuel type, and gearbox type, not whether the donor car was a base Muse, an Independence, or a sportier XSi. One thing to be aware of is that the XSi used higher-output petrol units, so the engine codes will differ from the lower-spec trims and you must match code to code rather than badge to badge. Cosmetic items such as engine covers may look slightly different between donor and recipient cars, but that has no bearing on whether the engine itself will fit and run.

The engine code is the most reliable detail you can supply to a breaker, sitting above fuel type, year, or trim when it comes to finding the correct match. You can find it on your V5 registration document or by running a VIN check through a reputable decoder. Give that code directly to the breaker alongside your registration, as it removes ambiguity and lets them pull a unit they know is mechanically compatible.

No — a diesel-to-petrol swap is not a like-for-like engine replacement and goes well beyond a standard fitment swap; the ancillaries, fuelling systems, and engine management are entirely different. When searching for a replacement, always specify your existing fuel type to the breaker so they quote on a matching unit. Mixing fuel types introduces significant complexity that is outside the scope of a used-parts swap and would need specialist assessment.

Whether the replacement engine's ECU or immobiliser will pair correctly with your 106 is not something a parts listing can confirm, as this depends on the specific units involved and how they were originally coded. You should raise this directly with the breaker before purchasing, describing both your car's registration and the donor vehicle's details so they can advise from experience. A specialist or auto-electrician may also need to be involved once the engine is sourced.