Piston for BMW 3 Series: Magnesium Alloy
This piston 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 fitment that looked right on paper and failed on the bench, or warranty claims traced back to a single lot. Both are specification problems, and both are preventable.
Specification
| Product | Piston |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Magnesium Alloy |
| Typical use | Long-Distance Touring |
| MOQ | 2,000 pieces per specification |
| Sampling | 10 working days, 5 days per revision |
| Bulk lead time | 15-40 days after approval |
| Compliance | ISO/TS 16949 |
| Packing | 100 pieces per inner box, 500 per carton |
Material options
- Titanium Alloy — chosen where wear resistance comes first
- Ceramic Composite — selected when the part is exposed to weather and road salt
- ABS Plastic — selected when the part is exposed to weather and road salt
- High Density Foam — specified where the part sits close to a heat source
- Tempered Glass — specified where the part sits close to a heat source
Processes available
- surface grinding
- electroplating
- assembly line testing
- CNC machining
- die casting
- robot welding
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 long-distance touring. Related applications include farm use, coastal delivery, rental fleets, heavy load hauling, urban courier work.
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
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 2000 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.
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.
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the ISO/TS 16949-compliant build instead of a fresh interpretation.
Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.
