Case Study: LED Headlight Bulb Supply for a bus operator in North America
Source:Case /
Time:2026-09-18
LED Headlight Bulb for A bus operator in North America
A bus operator came to us with a led headlight bulb programme for North America. 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
- A specification nobody had written down
- Reorders that did not match the approved sample
- A supplier who changed material without saying so
What was specified
| Part | LED Headlight Bulb |
|---|---|
| Client | A bus operator |
| Market | North America |
| Volume | 2,000 pieces across 4 specifications |
| Base material | Forged Aluminium |
| Sampling rounds | 2 |
| Delivery window | 10 weeks from PO to ex-factory |
| Compliance | REACH |
How it was resolved
- The specification was rebuilt around Forged Aluminium 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
- 2,000 pieces delivered inside the 10-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
Keep one accountable owner on both sides. Most delays come from hand-offs, not from machines.
Planning something similar?
Share a sample or a drawing and we will quote against a written specification, not against a photograph.
