Wheel Cylinder for Audi Q5: Silicone
This wheel cylinder for the Audi Q5 is specified around silicone, 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 documentation that arrived after the container shipped. Both are specification problems, and both are preventable.

Specification
| Product | Wheel Cylinder |
|---|---|
| Vehicle application | Audi Q5 |
| Material / finish | Silicone |
| Typical use | Rural Transport |
| MOQ | 2,000 pieces per specification |
| Sampling | 10 working days, 5 days per revision |
| Bulk lead time | 25-30 days after approval |
| Compliance | SAE J431 |
| Packing | 10 pieces per inner box, 200 per carton |
Material options
- Carbon Steel — specified where the part sits close to a heat source
- Tempered Glass — selected when the part is exposed to weather and road salt
- Stainless Steel — the cost-effective default for volume programmes
- EPDM Rubber — preferred when weight matters more than rigidity
- PU Leather — chosen where wear resistance comes first

Processes available
- ultrasonic cleaning
- powder coating
- electroplating
- shot blasting
- cold forging
- anodising
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 rural transport. Related applications include ride-hailing fleets, passenger transport, weekend riding, airport ground fleets, wet weather riding.
Quality and packing
- In-line inspection with AQL 1.5 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
How long does sampling take?
Samples leave the factory in 10 working days, and each revision round adds about 5 days once you have seen the first piece.
What testing is included?
Standard lots ship with dimensional and hardness reports. SAE J431 documentation is issued with the shipment when your market requires it.
What is the minimum order quantity?
The standard MOQ is 2000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
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.
Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.







