Brake Master Cylinder for Audi A4: High Density Foam
This brake master cylinder for the Audi A4 is specified around high density foam, 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 documentation that arrived after the container shipped, or documentation that arrived after the container shipped. Both are specification problems, and both are preventable.
Specification
| Product | Brake Master Cylinder |
|---|---|
| Vehicle application | Audi A4 |
| Material / finish | High Density Foam |
| Typical use | Passenger Transport |
| MOQ | 500 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 25-55 days after approval |
| Compliance | ECE R90 |
| Packing | 50 pieces per inner box, 1000 per carton |
Material options
- Zinc Plated Steel — selected when the part is exposed to weather and road salt
- PU Leather — selected when the part is exposed to weather and road salt
- Neoprene — preferred when weight matters more than rigidity
- High Density Foam — specified where the part sits close to a heat source
- Chromed Steel — used when the finish has to hold a coating
Processes available
- sintering
- powder coating
- ultrasonic cleaning
- anodising
- assembly line testing
- surface grinding
Fitment notes
Check whether the mounting points on your market version match the catalogue drawing — regional variants are the usual cause of a wrong first order.
Where it is used
The specification above is the one most often ordered for passenger transport. Related applications include mining sites, airport ground fleets, construction sites, rental fleets, security patrols.
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
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the ECE R90-compliant build instead of a fresh interpretation.
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.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 500 pieces per line.
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.
Ask for the current catalogue and the specification sheet for this line.
