Heater Core for BMW 3 Series: Magnesium Alloy
This heater core 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 documentation that arrived after the container shipped, or reorders that did not match the approved sample. Both are specification problems, and both are preventable.

Specification
| Product | Heater Core |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Magnesium Alloy |
| Typical use | Weekend Riding |
| MOQ | 2,000 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 15-55 days after approval |
| Compliance | IATF 16949 |
| Packing | 20 pieces per inner box, 200 per carton |
Material options
- PU Leather — preferred when weight matters more than rigidity
- Magnesium Alloy — selected when the part is exposed to weather and road salt
- Nylon 66 — the cost-effective default for volume programmes
- ABS Plastic — chosen where wear resistance comes first
- Bronze — selected when the part is exposed to weather and road salt

Processes available
- injection moulding
- electroplating
- heat treatment
- cold forging
- die casting
- ultrasonic cleaning
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 weekend riding. Related applications include delivery fleets, roadside assistance, farm use, adventure travel, security patrols.
Quality and packing
- In-line inspection with AQL 2.5 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
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 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 2000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 2000 pieces per line.
Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.







