Oxygen Sensor for BMW 3 Series: High Density Foam
This oxygen sensor for the BMW 3 Series is specified around high density foam, 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 a fitment that looked right on paper and failed on the bench, or inconsistent hardness between lots. Both are specification problems, and both are preventable.

Specification
| Product | Oxygen Sensor |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | High Density Foam |
| Typical use | Mining Sites |
| MOQ | 2,000 pieces per specification |
| Sampling | 14 working days, 5 days per revision |
| Bulk lead time | 20-30 days after approval |
| Compliance | ECE R90 |
| Packing | 20 pieces per inner box, 1000 per carton |
Material options
- Anodised Aluminium — the cost-effective default for volume programmes
- Chromed Steel — specified where the part sits close to a heat source
- Aluminium Alloy — selected when the part is exposed to weather and road salt
- ABS Plastic — used when the finish has to hold a coating
- High Density Foam — the cost-effective default for volume programmes

Processes available
- CNC machining
- shot blasting
- powder coating
- electroplating
- 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 mining sites. Related applications include farm use, mountain roads, ride-hailing fleets, mining sites, long-distance touring.
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 testing is included?
Standard lots ship with dimensional and hardness reports. ECE R90 documentation is issued with the shipment when your market requires it.
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.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 2000 pieces per line.
Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.







