Window Switch for BMW 3 Series: Sintered Metal
This window switch for the BMW 3 Series is specified around sintered metal, 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 inconsistent hardness between lots, or inconsistent hardness between lots. Both are specification problems, and both are preventable.
Specification
| Product | Window Switch |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Sintered Metal |
| Typical use | Track Days |
| MOQ | 200 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 15-30 days after approval |
| Compliance | SGS |
| Packing | 10 pieces per inner box, 500 per carton |
Material options
- Cast Iron — specified where the part sits close to a heat source
- Titanium Alloy — chosen where wear resistance comes first
- Powder Coated Steel — preferred when weight matters more than rigidity
- Forged Aluminium — selected when the part is exposed to weather and road salt
- Nylon 66 — chosen where wear resistance comes first
Processes available
- anodising
- surface grinding
- heat treatment
- robot welding
- gravity casting
- ultrasonic cleaning
Fitment notes
Check whether the mounting points on your market version match the catalogue drawing — regional variants are the usual cause of a wrong first order.
Where it is used
The specification above is the one most often ordered for track days. Related applications include construction sites, off-road trails, food delivery, weekend riding, long-distance touring.
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 200 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
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 5 days once you have seen the first piece.
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the SGS-compliant build instead of a fresh interpretation.
Send the specification you are working to and we will confirm what we can match, what we would change and why.
