Transfer Case for BMW 3 Series: Natural Rubber
This transfer case for the BMW 3 Series is specified around natural rubber, 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 fitment that looked right on paper and failed on the bench. Both are specification problems, and both are preventable.

Specification
| Product | Transfer Case |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Natural Rubber |
| Typical use | Construction Sites |
| MOQ | 2,000 pieces per specification |
| Sampling | 7 working days, 3 days per revision |
| Bulk lead time | 25-40 days after approval |
| Compliance | E-mark |
| Packing | 20 pieces per inner box, 500 per carton |
Material options
- EPDM Rubber — chosen where wear resistance comes first
- Ceramic Composite — the cost-effective default for volume programmes
- Brass — the cost-effective default for volume programmes
- Nylon 66 — preferred when weight matters more than rigidity
- Silicone — the cost-effective default for volume programmes

Processes available
- CNC machining
- rubber vulcanisation
- cold forging
- gravity casting
- assembly line testing
- sintering
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 construction sites. Related applications include off-road trails, night riding, roadside assistance, construction sites, daily commuting.
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
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 2000 pieces per line.
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.
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.
How long does sampling take?
Samples leave the factory in 7 working days, and each revision round adds about 3 days once you have seen the first piece.
Ask for the current catalogue and the specification sheet for this line.







