Case Study: Cabin Filter Supply for a government fleet in the Middle East
Source:Case /
Time:2026-09-18
Cabin Filter for A government fleet in the Middle East
A government fleet came to us with a cabin filter programme for the Middle East. The brief was ordinary and unforgiving at the same time: a fixed launch window, a landed cost that had to survive freight and duty, and a part that had to match an existing sample. This case records what was specified, what went wrong in sampling and how the bulk order landed.
The starting point
- Lead time that slipped twice before bulk started
- Inconsistent hardness between lots
- A supplier who changed material without saying so
What was specified
| Part | Cabin Filter |
|---|---|
| Client | A government fleet |
| Market | the Middle East |
| Volume | 50,000 pieces across 4 specifications |
| Base material | EPDM Rubber |
| Sampling rounds | 3 |
| Delivery window | 6 weeks from PO to ex-factory |
| Compliance | SAE J431 |
How it was resolved
- The specification was rebuilt around EPDM Rubber and the tolerance locked before bulk.
- A pre-production sample was approved and kept as the golden reference.
- Production ran with in-line inspection and a mid-run photo report.
- Cartons were packed to the client's own barcode and ratio specification.
- Documentation shipped with the goods instead of after them.
Result
- 50,000 pieces delivered inside the 6-week window.
- Unit cost held within 3.0% of the original quotation.
- Inspection-related rejection stayed under 2.0%.
- The specification is on file, so reorders reproduce the approved sample.
What we would repeat
Approve a pre-production sample made from the actual bulk material. Substitute material behaves differently in service.
Planning something similar?
Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.
