Piston Ring for GMC Sierra: Bronze
This piston ring for the GMC Sierra is specified around bronze, 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 a supplier who changed material without saying so, or lead time that slipped twice before bulk started. Both are specification problems, and both are preventable.

Specification
| Product | Piston Ring |
|---|---|
| Vehicle application | GMC Sierra |
| Material / finish | Bronze |
| Typical use | Roadside Assistance |
| MOQ | 500 pieces per specification |
| Sampling | 10 working days, 5 days per revision |
| Bulk lead time | 25-30 days after approval |
| Compliance | RoHS |
| Packing | 20 pieces per inner box, 1000 per carton |
Material options
- Bronze — selected when the part is exposed to weather and road salt
- Silicone — used when the finish has to hold a coating
- Stainless Steel — the cost-effective default for volume programmes
- PVC Coated Fabric — preferred when weight matters more than rigidity
- Forged Aluminium — preferred when weight matters more than rigidity

Processes available
- CNC machining
- robot welding
- gravity casting
- die casting
- shot blasting
- cold forging
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 roadside assistance. Related applications include passenger transport, off-road trails, motocross, delivery fleets, daily commuting.
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 5 days once you have seen the first piece.
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.
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the RoHS-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.
Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.







