Oxygen Sensor for BMW 3 Series: Magnesium Alloy
This oxygen sensor for the BMW 3 Series is specified around magnesium alloy, 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 supplier who changed material without saying so, or a fitment that looked right on paper and failed on the bench. Both are specification problems, and both are preventable.

Specification
| Product | Oxygen Sensor |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Magnesium Alloy |
| Typical use | Food Delivery |
| MOQ | 500 pieces per specification |
| Sampling | 14 working days, 3 days per revision |
| Bulk lead time | 20-55 days after approval |
| Compliance | ISO 9001 |
| Packing | 100 pieces per inner box, 200 per carton |
Material options
- Zinc Plated Steel — chosen where wear resistance comes first
- EPDM Rubber — chosen where wear resistance comes first
- Brass — selected when the part is exposed to weather and road salt
- Reinforced Nylon — specified where the part sits close to a heat source
- Silicone — specified where the part sits close to a heat source

Processes available
- CNC machining
- precision stamping
- anodising
- surface grinding
- sintering
- rubber vulcanisation
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 food delivery. Related applications include coastal delivery, roadside assistance, ride-hailing fleets, mountain roads, airport ground 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
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.
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.
What is the minimum order quantity?
The standard MOQ is 500 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
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.
Send the specification you are working to and we will confirm what we can match, what we would change and why.







