Knock Sensor for BMW 3 Series: PU Leather
This knock sensor for the BMW 3 Series is specified around pu leather, 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 warranty claims traced back to a single lot, or inconsistent hardness between lots. Both are specification problems, and both are preventable.
Specification
| Product | Knock Sensor |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | PU Leather |
| Typical use | Security Patrols |
| MOQ | 3,000 pieces per specification |
| Sampling | 7 working days, 3 days per revision |
| Bulk lead time | 20-30 days after approval |
| Compliance | SAE J431 |
| Packing | 20 pieces per inner box, 500 per carton |
Material options
- Nylon 66 — selected when the part is exposed to weather and road salt
- Carbon Steel — chosen where wear resistance comes first
- EPDM Rubber — the cost-effective default for volume programmes
- Carbon Fibre Composite — used when the finish has to hold a coating
- ABS Plastic — used when the finish has to hold a coating
Processes available
- anodising
- precision stamping
- powder coating
- injection moulding
- assembly line testing
- electroplating
Fitment notes
Keep the old part until the new one is on the bench. Comparing them side by side settles questions a photograph never will.
Where it is used
The specification above is the one most often ordered for security patrols. Related applications include airport ground fleets, night riding, adventure travel, roadside assistance, food delivery.
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
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 7 working days, and each revision round adds about 3 days once you have seen the first piece.
What testing is included?
Standard lots ship with dimensional and hardness reports. SAE J431 documentation is issued with the shipment when your market requires it.
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.
Share a sample or a drawing and we will quote against a written specification, not against a photograph.
