Wheel Hub Assembly for BMW 3 Series: Cast Iron
This wheel hub assembly for the BMW 3 Series is specified around cast iron, 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 reorders that did not match the approved sample, or inconsistent hardness between lots. Both are specification problems, and both are preventable.

Specification
| Product | Wheel Hub Assembly |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Cast Iron |
| Typical use | Coastal Delivery |
| MOQ | 200 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 15-40 days after approval |
| Compliance | SGS |
| Packing | 50 pieces per inner box, 500 per carton |
Material options
- PVC Coated Fabric — used when the finish has to hold a coating
- Silicone — chosen where wear resistance comes first
- EPDM Rubber — used when the finish has to hold a coating
- Sintered Metal — used when the finish has to hold a coating
- Bronze — chosen where wear resistance comes first

Processes available
- assembly line testing
- rubber vulcanisation
- die casting
- laser cutting
- electroplating
- gravity casting
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 coastal delivery. Related applications include night riding, passenger transport, coastal delivery, delivery fleets, mining sites.
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
What testing is included?
Standard lots ship with dimensional and hardness reports. SGS documentation is issued with the shipment when your market requires it.
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 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.
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.
Ask for the current catalogue and the specification sheet for this line.







