Water Pump for BMW 3 Series: EPDM Rubber
This water pump for the BMW 3 Series is specified around epdm rubber, 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 packing that arrived crushed at the port. Both are specification problems, and both are preventable.

Specification
| Product | Water Pump |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | EPDM Rubber |
| Typical use | Construction Sites |
| MOQ | 500 pieces per specification |
| Sampling | 14 working days, 3 days per revision |
| Bulk lead time | 15-55 days after approval |
| Compliance | DOT |
| Packing | 100 pieces per inner box, 500 per carton |
Material options
- EPDM Rubber — specified where the part sits close to a heat source
- Tempered Glass — the cost-effective default for volume programmes
- Zinc Plated Steel — preferred when weight matters more than rigidity
- Forged Aluminium — chosen where wear resistance comes first
- Brass — the cost-effective default for volume programmes

Processes available
- robot welding
- shot blasting
- assembly line testing
- electroplating
- laser cutting
- anodising
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 construction sites. Related applications include rental fleets, security patrols, urban courier work, airport ground fleets, construction 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
What testing is included?
Standard lots ship with dimensional and hardness reports. DOT documentation is issued with the shipment when your market requires it.
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.
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the DOT-compliant build instead of a fresh interpretation.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 500 pieces per line.
Tell us the model, the fitment and the quantity and we will hold a production slot for you.







