Starter Motor for BMW 3 Series: Tempered Glass
This starter motor for the BMW 3 Series is specified around tempered glass, 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 | Starter Motor |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Tempered Glass |
| Typical use | Security Patrols |
| MOQ | 3,000 pieces per specification |
| Sampling | 7 working days, 3 days per revision |
| Bulk lead time | 15-30 days after approval |
| Compliance | TUV |
| Packing | 20 pieces per inner box, 200 per carton |
Material options
- Stainless Steel — specified where the part sits close to a heat source
- Titanium Alloy — preferred when weight matters more than rigidity
- Semi-Metallic Compound — preferred when weight matters more than rigidity
- Kevlar Composite — the cost-effective default for volume programmes
- Carbon Steel — specified where the part sits close to a heat source

Processes available
- gravity casting
- sintering
- rubber vulcanisation
- anodising
- powder coating
- electroplating
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 security patrols. Related applications include rental fleets, adventure travel, heavy load hauling, roadside assistance, passenger transport.
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 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.
What is the minimum order quantity?
The standard MOQ is 3000 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 TUV-compliant build instead of a fresh interpretation.
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.
Share a sample or a drawing and we will quote against a written specification, not against a photograph.







