Oxygen Sensor Unit for BMW 3 Series: Bronze
This oxygen sensor unit for the BMW 3 Series is specified around bronze, 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 specification nobody had written down, or a supplier who changed material without saying so. Both are specification problems, and both are preventable.

Specification
| Product | Oxygen Sensor Unit |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Bronze |
| Typical use | Ride-Hailing Fleets |
| MOQ | 1,000 pieces per specification |
| Sampling | 14 working days, 5 days per revision |
| Bulk lead time | 20-40 days after approval |
| Compliance | ISO 9001 |
| Packing | 50 pieces per inner box, 200 per carton |
Material options
- High Density Foam — the cost-effective default for volume programmes
- Ceramic Composite — chosen where wear resistance comes first
- Nylon 66 — chosen where wear resistance comes first
- Zinc Plated Steel — chosen where wear resistance comes first
- PVC Coated Fabric — selected when the part is exposed to weather and road salt

Processes available
- ultrasonic cleaning
- sintering
- heat treatment
- CNC machining
- cold forging
- robot welding
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 ride-hailing fleets. Related applications include motocross, roadside assistance, weekend riding, off-road trails, adventure travel.
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 is the minimum order quantity?
The standard MOQ is 1000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 1000 pieces per line.
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.
How long does sampling take?
Samples leave the factory in 14 working days, and each revision round adds about 5 days once you have seen the first piece.
Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.







