Piston Ring for BYD F3: Brass
This piston ring for the BYD F3 is specified around brass, 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 premature wear on the first batch, or a supplier who changed material without saying so. Both are specification problems, and both are preventable.

Specification
| Product | Piston Ring |
|---|---|
| Vehicle application | BYD F3 |
| Material / finish | Brass |
| Typical use | Track Days |
| MOQ | 500 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 15-40 days after approval |
| Compliance | REACH |
| Packing | 100 pieces per inner box, 500 per carton |
Material options
- Polypropylene — specified where the part sits close to a heat source
- Natural Rubber — specified where the part sits close to a heat source
- Titanium Alloy — the cost-effective default for volume programmes
- Cast Iron — used when the finish has to hold a coating
- Powder Coated Steel — preferred when weight matters more than rigidity

Processes available
- heat treatment
- laser cutting
- robot welding
- shot blasting
- cold forging
- electroplating
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 track days. Related applications include mining sites, security patrols, rural transport, long-distance touring, adventure travel.
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
What testing is included?
Standard lots ship with dimensional and hardness reports. REACH documentation is issued with the shipment when your market requires it.
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the REACH-compliant build instead of a fresh interpretation.
How long does sampling take?
Samples leave the factory in 7 working days, and each revision round adds about 5 days once you have seen the first piece.
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.







