Brake Master Cylinder for BMW 3 Series: PU Leather
This brake master cylinder for the BMW 3 Series is specified around pu leather, 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 warranty claims traced back to a single lot, or reorders that did not match the approved sample. Both are specification problems, and both are preventable.
Specification
| Product | Brake Master Cylinder |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | PU Leather |
| Typical use | Urban Courier Work |
| MOQ | 2,000 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 20-40 days after approval |
| Compliance | RoHS |
| Packing | 100 pieces per inner box, 200 per carton |
Material options
- Cast Iron — selected when the part is exposed to weather and road salt
- Carbon Steel — used when the finish has to hold a coating
- Titanium Alloy — the cost-effective default for volume programmes
- Carbon Fibre Composite — preferred when weight matters more than rigidity
- Ceramic Composite — chosen where wear resistance comes first
Processes available
- injection moulding
- CNC machining
- laser cutting
- sintering
- heat treatment
- rubber vulcanisation
Fitment notes
Confirm the fitment against the VIN or the frame number before ordering; two model years often share a name and not a part.
Where it is used
The specification above is the one most often ordered for urban courier work. Related applications include ride-hailing fleets, passenger transport, security patrols, night riding, mining sites.
Quality and packing
- In-line inspection with AQL 2.5 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
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 2000 pieces per line.
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.
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the RoHS-compliant build instead of a fresh interpretation.
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.
Share a sample or a drawing and we will quote against a written specification, not against a photograph.
