Downpipe for BYD F3: Reinforced Nylon
This downpipe for the BYD F3 is specified around reinforced nylon, 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 packing that arrived crushed at the port. Both are specification problems, and both are preventable.

Specification
| Product | Downpipe |
|---|---|
| Vehicle application | BYD F3 |
| Material / finish | Reinforced Nylon |
| Typical use | Airport Ground Fleets |
| MOQ | 500 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 15-30 days after approval |
| Compliance | REACH |
| Packing | 10 pieces per inner box, 200 per carton |
Material options
- Magnesium Alloy — chosen where wear resistance comes first
- Aluminium Alloy — specified where the part sits close to a heat source
- Neoprene — the cost-effective default for volume programmes
- Titanium Alloy — the cost-effective default for volume programmes
- Reinforced Nylon — preferred when weight matters more than rigidity

Processes available
- shot blasting
- CNC machining
- injection moulding
- laser cutting
- die casting
- 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 airport ground fleets. Related applications include rural transport, coastal delivery, track days, delivery fleets, security patrols.
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. REACH documentation is issued with the shipment when your market requires it.
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.
Send the specification you are working to and we will confirm what we can match, what we would change and why.







