Mercedes-Benz Citan Brake Master Cylinder Replacement Parts

Yes, the Citan has a conventional brake master cylinder — it is a standard hydraulic braking component found on all variants of the Citan, regardless of engine size or payload rating. The master cylinder converts pedal pressure into hydraulic pressure to operate the brakes, so every Citan needs one. If you have been told you need a brake servo instead, or a brake caliper, those are separate parts, but the master cylinder itself does exist and is sourced regularly from breakers.

The W415 and W420 are distinct generations — the W415 ran from 2012 to 2021 and is based on the Renault Kangoo platform, while the W420 launched in 2021 on a new platform — and the brake master cylinders between these two generations are not the same and are very unlikely to interchange. Always source from the same generation as your vehicle. Confirm the exact part number with the breaker against your registration to be certain.

Engine size and payload/GVW rating can influence the brake specification on a van like the Citan, since heavier or more powerful variants may run a different braking setup to handle the increased loads. It is worth checking the plate on your van for the GVW rating rather than relying solely on the model name, as two Citans with the same badge can have different specs. Tell the breaker your engine size and GVW alongside your registration so they can match the correct unit.

Trim level does not affect brake master cylinder fitment — the trim names on the Citan reflect interior specification, equipment levels, and passenger versus cargo configuration rather than any difference in the braking hardware. What matters for matching the correct cylinder is the generation, engine size, and payload rating, not whether your van is a Pure, Progressive, or Tourer. You may find other cosmetic differences when buying from a breaker, but these are irrelevant to the function of the master cylinder.

Both a 2013 and a 2018 Citan fall within the W415 generation (2012–2021), so they are from the same platform, which is a good starting point for compatibility. However, differences in engine size or GVW rating between the donor and your vehicle could mean different brake specifications are used, so fitment is not guaranteed on generation alone. Confirm the engine size, GVW, and part numbers with the breaker against both registrations before purchasing.

Used Citan brake master cylinders are available from vehicle dismantlers (breakers) across the UK, and Findapart lets you get quotes from multiple breakers at once to compare prices. When contacting a breaker, give them your full registration, engine size, and GVW plate rating so they can pull the correct unit from a matching donor vehicle. Always check the part number if possible, and ask the breaker to confirm fitment against your specific vehicle before committing.