Timing Chain for GMC Sierra: Chromed Steel
This timing chain for the GMC Sierra is specified around chromed steel, 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 inconsistent hardness between lots, or reorders that did not match the approved sample. Both are specification problems, and both are preventable.
Specification
| Product | Timing Chain |
|---|---|
| Vehicle application | GMC Sierra |
| Material / finish | Chromed Steel |
| Typical use | Passenger Transport |
| MOQ | 3,000 pieces per specification |
| Sampling | 10 working days, 3 days per revision |
| Bulk lead time | 25-55 days after approval |
| Compliance | SAE J431 |
| Packing | 20 pieces per inner box, 1000 per carton |
Material options
- Neoprene — selected when the part is exposed to weather and road salt
- Kevlar Composite — preferred when weight matters more than rigidity
- Aluminium Alloy — chosen where wear resistance comes first
- Carbon Fibre Composite — selected when the part is exposed to weather and road salt
- Tempered Glass — the cost-effective default for volume programmes
Processes available
- laser cutting
- shot blasting
- ultrasonic cleaning
- injection moulding
- gravity casting
- die casting
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 passenger transport. Related applications include track days, ride-hailing fleets, urban courier work, night riding, construction sites.
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
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 SAE J431-compliant build instead of a fresh interpretation.
What is the minimum order quantity?
The standard MOQ is 3000 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 specification you are working to and we will confirm what we can match, what we would change and why.
