Relay for BMW 3 Series: PU Leather
This relay for the BMW 3 Series is specified around pu leather, 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 warranty claims traced back to a single lot. Both are specification problems, and both are preventable.

Specification
| Product | Relay |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | PU Leather |
| Typical use | Mountain Roads |
| MOQ | 500 pieces per specification |
| Sampling | 10 working days, 3 days per revision |
| Bulk lead time | 15-40 days after approval |
| Compliance | ECE R90 |
| Packing | 10 pieces per inner box, 500 per carton |
Material options
- Anodised Aluminium — the cost-effective default for volume programmes
- Reinforced Nylon — preferred when weight matters more than rigidity
- Silicone — chosen where wear resistance comes first
- Polypropylene — preferred when weight matters more than rigidity
- PVC Coated Fabric — chosen where wear resistance comes first

Processes available
- ultrasonic cleaning
- heat treatment
- cold forging
- robot welding
- sintering
- surface grinding
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 mountain roads. Related applications include weekend riding, mining sites, construction sites, security patrols, airport ground fleets.
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
How long does sampling take?
Samples leave the factory in 10 working days, and each revision round adds about 3 days once you have seen the first piece.
What is the minimum order quantity?
The standard MOQ is 500 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
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.
Ask for the current catalogue and the specification sheet for this line.







