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Case Study: Washer Pump Supply for a bus operator in West Africa

Source:Case / Time:2026-09-18

Washer Pump for A bus operator in West Africa

A bus operator came to us with a washer pump programme for West Africa. 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

  • Reorders that did not match the approved sample
  • A supplier who changed material without saying so
  • Documentation that arrived after the container shipped

Washer Pump case study

What was specified

PartWasher Pump
ClientA bus operator
MarketWest Africa
Volume5,000 pieces across 6 specifications
Base materialMagnesium Alloy
Sampling rounds2
Delivery window8 weeks from PO to ex-factory
ComplianceDOT

How it was resolved

  1. The specification was rebuilt around Magnesium Alloy and the tolerance locked before bulk.
  2. A pre-production sample was approved and kept as the golden reference.
  3. Production ran with in-line inspection and a mid-run photo report.
  4. Cartons were packed to the client's own barcode and ratio specification.
  5. Documentation shipped with the goods instead of after them.

Washer Pump production run

Result

  • 5,000 pieces delivered inside the 8-week window.
  • Unit cost held within 1.5% of the original quotation.
  • Inspection-related rejection stayed under 0.5%.
  • The specification is on file, so reorders reproduce the approved sample.

What we would repeat

Lock the material standard before sampling. Once the base changes, every downstream approval has to be redone and the calendar slips.

Planning something similar?

Send the specification you are working to and we will confirm what we can match, what we would change and why.

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