Cylinder Head for GMC Sierra: PVC Coated Fabric
This cylinder head for the GMC Sierra is specified around pvc coated fabric, 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 reorders that did not match the approved sample, or documentation that arrived after the container shipped. Both are specification problems, and both are preventable.

Specification
| Product | Cylinder Head |
|---|---|
| Vehicle application | GMC Sierra |
| Material / finish | PVC Coated Fabric |
| Typical use | Coastal Delivery |
| MOQ | 2,000 pieces per specification |
| Sampling | 14 working days, 3 days per revision |
| Bulk lead time | 20-30 days after approval |
| Compliance | CCC |
| Packing | 20 pieces per inner box, 1000 per carton |
Material options
- Silicone — chosen where wear resistance comes first
- High Density Foam — the cost-effective default for volume programmes
- Forged Aluminium — specified where the part sits close to a heat source
- Ceramic Composite — specified where the part sits close to a heat source
- EPDM Rubber — used when the finish has to hold a coating

Processes available
- powder coating
- electroplating
- CNC machining
- gravity casting
- surface grinding
- precision stamping
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 coastal delivery. Related applications include passenger transport, long-distance touring, mining sites, security patrols, rental fleets.
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
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.
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 is the minimum order quantity?
The standard MOQ is 2000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
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 part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.







