Transmission Cooler for BMW 3 Series: Carbon Fibre Composite
This transmission cooler for the BMW 3 Series is specified around carbon fibre composite, 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 warranty claims traced back to a single lot. Both are specification problems, and both are preventable.

Specification
| Product | Transmission Cooler |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Carbon Fibre Composite |
| Typical use | Night Riding |
| MOQ | 1,000 pieces per specification |
| Sampling | 10 working days, 3 days per revision |
| Bulk lead time | 25-30 days after approval |
| Compliance | IATF 16949 |
| Packing | 10 pieces per inner box, 200 per carton |
Material options
- Nylon 66 — the cost-effective default for volume programmes
- Neoprene — used when the finish has to hold a coating
- Stainless Steel — preferred when weight matters more than rigidity
- Semi-Metallic Compound — preferred when weight matters more than rigidity
- Tempered Glass — chosen where wear resistance comes first

Processes available
- sintering
- anodising
- CNC machining
- gravity casting
- robot welding
- assembly line testing
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 night riding. Related applications include mining sites, weekend riding, ride-hailing fleets, delivery fleets, roadside assistance.
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
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 testing is included?
Standard lots ship with dimensional and hardness reports. IATF 16949 documentation is issued with the shipment when your market requires it.
What is the minimum order quantity?
The standard MOQ is 1000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
Can you match an existing sample?
Send a sample and we will reverse-engineer the specification, then produce a counter sample for approval before any bulk starts.
Tell us the model, the fitment and the quantity and we will hold a production slot for you.







