Peugeot 406 DPF Replacement Parts

The Peugeot 406 was produced from 1995 to 2004, and in practice a DPF is only relevant to the later diesel engines in that range, as DPF fitment became more common from around 2000 onward on Euro 3-era vehicles. The key factor for finding the right unit is your exact engine code rather than the model year alone, so always check your V5C or have your registration looked up before approaching a breaker. Never assume a DPF from an earlier 406 diesel will suit a later one without confirming the engine code matches.

The 406 received a facelift in 1999, so parts can differ across that boundary, and DPF fitment is particularly sensitive to the exact engine code and emissions specification of the year in question. Whether a unit from a pre-facelift car will physically and functionally interchange with one from a post-1999 car is something you must confirm with the breaker against your specific registration, as the exhaust system follows the engine and its emissions tune rather than the body generation alone. Do not assume visual similarity means compatibility.

No, trim level does not affect DPF fitment on the 406; the filter is determined by the engine code and emissions specification, not whether your car is an LX, GLX, or Executive. You may find minor differences in surrounding heat shielding or bracketry between cars depending on how they were optioned, but the core DPF unit itself is an engine and exhaust match, not a trim match. Confirm the engine code with the breaker and ignore the trim badge when sourcing this part.

The HDi badge covers more than one engine variant on the 406, and DPF interchange specifics between different HDi codes is strong confirm-with-breaker territory rather than something that can be safely stated as a rule. Bring your engine code — found on the V5C or stamped on the block — when contacting a breaker, as they will need it to verify the unit against their dismantled vehicle. A DPF that does not match your engine's back-pressure and sensor requirements may cause fault codes or an MOT failure even if it physically bolts on.

The 406 was offered as both a saloon and an estate, and the exhaust routing can differ between body styles, which means the DPF assembly or its surrounding pipework may not be a straight swap across body styles even when the engine code is the same. Confirm the donor car's body style as well as its engine code with the breaker before agreeing a purchase, as a unit that looks correct may require additional fabrication or different connecting pipes. Always verify against your registration rather than relying on engine code alone when body style is a variable.

A used DPF that is in poor condition, has been removed, or does not match your engine's emissions specification can result in an MOT failure under the DPF visual inspection check introduced in 2014, which looks for evidence of removal or tampering. The unit must be the correct specification for your engine and emissions era, so confirm with the breaker that the donor vehicle's engine code and approximate year match yours. A visually similar DPF from the wrong emissions era or a damaged unit is not a safe purchase regardless of price.