For a right-hand-drive W204 C220 CDI, MANN’s catalogue identifies FP 29 005/1 as the biofunctional cabin-filter reference. FP 29 005 without the /1 is listed for left-hand drive. The catalogue also lists CUK 29 005 as an activated-carbon option for the W204/C204/S204 family. Check the full reference and your car’s application before ordering.
This guide concentrates on the C220 CDI BlueEFFICIENCY OM651.911/912 application, 125 kW/170 hp, listed by MANN from November 2008 to December 2014. Those dates describe catalogue coverage. They are not an instruction to replace the filter at a particular age or mileage.
FP 29 005 or FP 29 005/1?
| Reference | MANN catalogue distinction | Buying implication |
|---|---|---|
| FP 29 005/1 | Biofunctional cabin filter; right-hand drive | Relevant reference to check for a UK RHD car. |
| FP 29 005 | Biofunctional cabin filter; left-hand drive | Do not treat a listing that drops /1 as the same recommendation. |
| CUK 29 005 | Activated-carbon cabin filter listed for the model family | Check the live vehicle application and the exact product offered. |
The steering-side split is explicit in MANN’s 2024–26 catalogue. Its current FP 29 005/1 product page also lists the C220 CDI BlueEFFICIENCY OM651 application as right-hand drive. A broad “fits Mercedes W204” headline can therefore be less useful than the full part number and application notes.
Compare the two relevant shopping routes
FP 29 005/1 is the biofunctional option in the catalogue. CUK 29 005 is the activated-carbon option, and MANN’s current CUK product page includes the C220 CDI BlueEFFICIENCY OM651.911/912 application. These are manufacturer catalogue choices to compare against your car, rather than a claim that one filter is necessary for every owner.
Affiliate disclosure: As an Amazon Associate, Unusual Cars earns from qualifying purchases. Shopping links open product searches; check the exact product, application and seller before ordering.
Check that the selected Amazon result is the exact reference. Results may include a different suffix, a multipack or a different filter. Compare the complete product and delivered price, rather than relying on a search-result photograph or the retailer’s first suggestion.
Cabin filter and engine air filter are separate items
The cabin filter belongs to the ventilation system. The engine air filter is a different part with different application checks. On the selected OM651.911 engine, our W204 oil and engine air-filter guide explains C 35 003 and the separate 4MATIC branch. Buying a “Mercedes air filter” without clarifying which system you mean can lead to the wrong item.
Does a Service B message mean it must be replaced?
Use the Service Booklet, the car’s actual maintenance requirements and its invoice history to establish whether replacement is due. The owner manual directs detailed service scope and intervals to the Service Booklet. A B message or a visible suffix does not independently establish the correct cabin-filter reference or its last replacement date.
If the invoice only says “filters”, ask which filters were fitted and what their references were. An itemised record makes the next service easier to plan and helps avoid replacing a recently fitted component unnecessarily.
Buying the filter is separate from fitting it
This page verifies selection references; it does not provide a trim-removal procedure. If fitting it yourself, obtain instructions for the exact RHD installation before starting and follow the filter’s orientation instructions. Do not transfer a left-hand-drive video’s access method to your car solely because the dashboard looks similar.
Return to the W204 C220 CDI service and maintenance guide for the wider service plan, or see W204 ASSYST PLUS messages if you are starting from a dashboard reminder.
Sources and application notes
- MANN 2024–26 catalogue: printed p. 207, FP steering-side distinction and CUK family entry
- MANN FP 29 005/1 current product application: RHD C220 CDI OM651
- MANN CUK 29 005 current product application: C220 CDI OM651
- Mercedes 2013 saloon manual: printed p. 334, Service Booklet for scope and intervals
Sources checked 16 October 2026. The online Mercedes manual is the English 2013 saloon edition, part 2045843283Z102, supplied on a country-specific Mercedes website. Match its coverage to your vehicle’s own manual and Service Booklet. Catalogue dates describe parts applications, not service intervals.
Browse the Mercedes servicing and maintenance hub or our Mercedes diagnostic scanner guides. A scanner’s capabilities need checking against the car and the task; fault reading does not establish the maintenance due.
