Idler Pulley for GMC Sierra: Powder Coated Steel
This idler pulley for the GMC Sierra is specified around powder coated 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 premature wear on the first batch, or lead time that slipped twice before bulk started. Both are specification problems, and both are preventable.

Specification
| Product | Idler Pulley |
|---|---|
| Vehicle application | GMC Sierra |
| Material / finish | Powder Coated Steel |
| Typical use | Airport Ground Fleets |
| MOQ | 2,000 pieces per specification |
| Sampling | 10 working days, 5 days per revision |
| Bulk lead time | 15-30 days after approval |
| Compliance | E-mark |
| Packing | 20 pieces per inner box, 1000 per carton |
Material options
- EPDM Rubber — preferred when weight matters more than rigidity
- Natural Rubber — preferred when weight matters more than rigidity
- Nylon 66 — specified where the part sits close to a heat source
- Zinc Plated Steel — the cost-effective default for volume programmes
- Sintered Metal — the cost-effective default for volume programmes

Processes available
- die casting
- powder coating
- assembly line testing
- heat treatment
- anodising
- robot welding
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 airport ground fleets. Related applications include urban courier work, weekend riding, security patrols, mountain roads, wet weather riding.
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
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 long does sampling take?
Samples leave the factory in 10 working days, and each revision round adds about 5 days once you have seen the first piece.
What testing is included?
Standard lots ship with dimensional and hardness reports. E-mark documentation is issued with the shipment when your market requires it.
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the E-mark-compliant build instead of a fresh interpretation.
Tell us the model, the fitment and the quantity and we will hold a production slot for you.







