Differential for BMW X5: Silicone
This differential for the BMW X5 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 inconsistent hardness between lots, or reorders that did not match the approved sample. Both are specification problems, and both are preventable.

Specification
| Product | Differential |
|---|---|
| Vehicle application | BMW X5 |
| Material / finish | Silicone |
| Typical use | Passenger Transport |
| MOQ | 2,000 pieces per specification |
| Sampling | 14 working days, 5 days per revision |
| Bulk lead time | 15-40 days after approval |
| Compliance | ISO 9001 |
| Packing | 100 pieces per inner box, 1000 per carton |
Material options
- Ceramic Composite — used when the finish has to hold a coating
- Anodised Aluminium — the cost-effective default for volume programmes
- Tempered Glass — specified where the part sits close to a heat source
- Polypropylene — chosen where wear resistance comes first
- Magnesium Alloy — the cost-effective default for volume programmes

Processes available
- gravity casting
- rubber vulcanisation
- heat treatment
- injection moulding
- surface grinding
- cold forging
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 passenger transport. Related applications include farm use, track days, motocross, off-road trails, rental fleets.
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
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.
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 14 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. ISO 9001 documentation is issued with the shipment when your market requires it.
Send the specification you are working to and we will confirm what we can match, what we would change and why.







