Wiper Blade for GMC Sierra: Cast Iron
This wiper blade for the GMC Sierra is specified around cast iron, 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 documentation that arrived after the container shipped, or premature wear on the first batch. Both are specification problems, and both are preventable.

Specification
| Product | Wiper Blade |
|---|---|
| Vehicle application | GMC Sierra |
| Material / finish | Cast Iron |
| Typical use | Delivery Fleets |
| MOQ | 2,000 pieces per specification |
| Sampling | 10 working days, 5 days per revision |
| Bulk lead time | 15-55 days after approval |
| Compliance | TUV |
| Packing | 20 pieces per inner box, 500 per carton |
Material options
- Silicone — chosen where wear resistance comes first
- ABS Plastic — the cost-effective default for volume programmes
- High Density Foam — specified where the part sits close to a heat source
- Stainless Steel — preferred when weight matters more than rigidity
- Sintered Metal — the cost-effective default for volume programmes

Processes available
- surface grinding
- ultrasonic cleaning
- robot welding
- heat treatment
- cold forging
- 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 delivery fleets. Related applications include delivery fleets, food delivery, security patrols, rural transport, wet weather riding.
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
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 2000 pieces per line.
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the TUV-compliant build instead of a fresh interpretation.
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 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.
Ask for the current catalogue and the specification sheet for this line.







