Cylinder Head for GMC Sierra: Anodised Aluminium
This cylinder head for the GMC Sierra is specified around anodised aluminium, 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 lead time that slipped twice before bulk started. Both are specification problems, and both are preventable.
Specification
| Product | Cylinder Head |
|---|---|
| Vehicle application | GMC Sierra |
| Material / finish | Anodised Aluminium |
| Typical use | Passenger Transport |
| MOQ | 1,000 pieces per specification |
| Sampling | 14 working days, 3 days per revision |
| Bulk lead time | 20-40 days after approval |
| Compliance | DOT |
| Packing | 100 pieces per inner box, 500 per carton |
Material options
- Bronze — specified where the part sits close to a heat source
- Neoprene — preferred when weight matters more than rigidity
- Reinforced Nylon — selected when the part is exposed to weather and road salt
- Kevlar Composite — preferred when weight matters more than rigidity
- ABS Plastic — the cost-effective default for volume programmes
Processes available
- precision stamping
- injection moulding
- anodising
- electroplating
- ultrasonic cleaning
- sintering
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 coastal delivery, mining sites, mountain roads, urban courier work, food delivery.
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.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 1000 pieces per line.
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 testing is included?
Standard lots ship with dimensional and hardness reports. DOT documentation is issued with the shipment when your market requires it.
Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.
