Power Steering Hose for BMW 3 Series: Magnesium Alloy
This power steering hose 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 warranty claims traced back to a single lot, or a specification nobody had written down. Both are specification problems, and both are preventable.

Specification
| Product | Power Steering Hose |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Magnesium Alloy |
| Typical use | Heavy Load Hauling |
| MOQ | 3,000 pieces per specification |
| Sampling | 7 working days, 3 days per revision |
| Bulk lead time | 20-55 days after approval |
| Compliance | DOT |
| Packing | 10 pieces per inner box, 1000 per carton |
Material options
- Sintered Metal — preferred when weight matters more than rigidity
- Zinc Plated Steel — the cost-effective default for volume programmes
- Stainless Steel — chosen where wear resistance comes first
- PU Leather — the cost-effective default for volume programmes
- Natural Rubber — selected when the part is exposed to weather and road salt

Processes available
- rubber vulcanisation
- shot blasting
- die casting
- injection moulding
- anodising
- gravity casting
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 heavy load hauling. Related applications include ride-hailing fleets, wet weather riding, rental fleets, roadside assistance, food delivery.
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
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 3000 pieces per line.
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 testing is included?
Standard lots ship with dimensional and hardness reports. DOT documentation is issued with the shipment when your market requires it.
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.
Send the specification you are working to and we will confirm what we can match, what we would change and why.







