Starter Motor for BMW 3 Series: Powder Coated Steel
This starter motor for the BMW 3 Series is specified around powder coated steel, 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 premature wear on the first batch. Both are specification problems, and both are preventable.

Specification
| Product | Starter Motor |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Powder Coated Steel |
| Typical use | Off-Road Trails |
| MOQ | 3,000 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 25-40 days after approval |
| Compliance | SAE J431 |
| Packing | 100 pieces per inner box, 200 per carton |
Material options
- High Density Foam — the cost-effective default for volume programmes
- Cast Iron — selected when the part is exposed to weather and road salt
- Zinc Plated Steel — chosen where wear resistance comes first
- Polypropylene — preferred when weight matters more than rigidity
- Sintered Metal — the cost-effective default for volume programmes

Processes available
- gravity casting
- anodising
- powder coating
- precision stamping
- ultrasonic cleaning
- electroplating
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 off-road trails. Related applications include night riding, delivery fleets, heavy load hauling, wet weather riding, mining sites.
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
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the SAE J431-compliant build instead of a fresh interpretation.
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.
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.
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.
Ask for the current catalogue and the specification sheet for this line.







