Piston for GMC Sierra: Semi-Metallic Compound
This piston for the GMC Sierra is specified around semi-metallic compound, 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 inconsistent hardness between lots. Both are specification problems, and both are preventable.
Specification
| Product | Piston |
|---|---|
| Vehicle application | GMC Sierra |
| Material / finish | Semi-Metallic Compound |
| Typical use | Passenger Transport |
| MOQ | 200 pieces per specification |
| Sampling | 14 working days, 5 days per revision |
| Bulk lead time | 20-40 days after approval |
| Compliance | RoHS |
| Packing | 50 pieces per inner box, 200 per carton |
Material options
- Forged Aluminium — preferred when weight matters more than rigidity
- Nylon 66 — selected when the part is exposed to weather and road salt
- Carbon Steel — used when the finish has to hold a coating
- Zinc Plated Steel — specified where the part sits close to a heat source
- High Density Foam — specified where the part sits close to a heat source
Processes available
- ultrasonic cleaning
- injection moulding
- surface grinding
- shot blasting
- electroplating
- precision stamping
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 passenger transport. Related applications include food delivery, long-distance touring, wet weather riding, weekend riding, rental fleets.
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 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.
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.
What is the minimum order quantity?
The standard MOQ is 200 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.
Send the specification you are working to and we will confirm what we can match, what we would change and why.
