Transfer Case for BMW 3 Series: Semi-Metallic Compound
This transfer case for the BMW 3 Series is specified around semi-metallic compound, 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 lead time that slipped twice before bulk started, or a specification nobody had written down. Both are specification problems, and both are preventable.

Specification
| Product | Transfer Case |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Semi-Metallic Compound |
| Typical use | Delivery Fleets |
| MOQ | 3,000 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 20-40 days after approval |
| Compliance | IATF 16949 |
| Packing | 100 pieces per inner box, 1000 per carton |
Material options
- Brass — selected when the part is exposed to weather and road salt
- Zinc Plated Steel — the cost-effective default for volume programmes
- Carbon Fibre Composite — chosen where wear resistance comes first
- Magnesium Alloy — chosen where wear resistance comes first
- Cast Iron — the cost-effective default for volume programmes

Processes available
- electroplating
- precision stamping
- anodising
- powder coating
- laser cutting
- assembly line testing
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 delivery fleets. Related applications include rural transport, off-road trails, daily commuting, mountain roads, night 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 7 working days, and each revision round adds about 5 days once you have seen the first piece.
What is the minimum order quantity?
The standard MOQ is 3000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
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.
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.
Tell us the model, the fitment and the quantity and we will hold a production slot for you.







