Brake Master Cylinder for Citroen C5 Aircross: Brass
This brake master cylinder for the Citroen C5 Aircross is specified around brass, which decides how it behaves in service far more than the part name does. We build to a written specification — base material, dimensions, finish and packing — and hold that specification on file so every reorder reproduces the approved piece.
The usual reason a programme changes supplier is not unit price. It is a specification nobody had written down, or a specification nobody had written down. Both are specification problems, and both are preventable.

Specification
| Product | Brake Master Cylinder |
|---|---|
| Vehicle application | Citroen C5 Aircross |
| Material / finish | Brass |
| Typical use | Off-Road Trails |
| MOQ | 1,000 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 20-40 days after approval |
| Compliance | RoHS |
| Packing | 50 pieces per inner box, 1000 per carton |
Material options
- Chromed Steel — selected when the part is exposed to weather and road salt
- Nylon 66 — the cost-effective default for volume programmes
- Carbon Fibre Composite — used when the finish has to hold a coating
- Polypropylene — specified where the part sits close to a heat source
- Ceramic Composite — chosen where wear resistance comes first

Processes available
- gravity casting
- shot blasting
- laser cutting
- CNC machining
- powder coating
- die casting
Fitment notes
Keep the old part until the new one is on the bench. Comparing them side by side settles questions a photograph never will.
Where it is used
The specification above is the one most often ordered for off-road trails. Related applications include roadside assistance, food delivery, airport ground fleets, daily commuting, coastal delivery.
Quality and packing
- In-line inspection with AQL 4.0 sampling on every lot.
- Dimensional report issued against the approved drawing.
- Carton marking and barcode to your specification.
- Golden sample retained at the factory as the reorder reference.
Questions buyers ask
What happens if a lot fails inspection?
The lot is re-inspected against the golden sample, and replacement pieces ship on the next available booking at our cost.
How long does sampling take?
Samples leave the factory in 7 working days, and each revision round adds about 5 days once you have seen the first piece.
Can you match an existing sample?
Send a sample and we will reverse-engineer the specification, then produce a counter sample for approval before any bulk starts.
How is packing specified?
Individual packing, inner box quantity and carton marking are confirmed at quotation stage so the cartons arrive ready for your warehouse.
Send the specification you are working to and we will confirm what we can match, what we would change and why.







