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Case Study: Radiator Cap Supply for an online marketplace seller in Eastern Europe

Source:Case / Time:2026-09-18

Radiator Cap for An online marketplace seller in Eastern Europe

An online marketplace seller came to us with a radiator cap programme for Eastern Europe. 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

  • Documentation that arrived after the container shipped
  • A fitment that looked right on paper and failed on the bench
  • A specification nobody had written down

Radiator Cap case study

What was specified

PartRadiator Cap
ClientAn online marketplace seller
MarketEastern Europe
Volume50,000 pieces across 6 specifications
Base materialAnodised Aluminium
Sampling rounds4
Delivery window8 weeks from PO to ex-factory
ComplianceIATF 16949

How it was resolved

  1. The specification was rebuilt around Anodised Aluminium 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.

Radiator Cap production run

Result

  • 50,000 pieces delivered inside the 8-week window.
  • Unit cost held within 4.5% 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

Fix the specification count early. Adding variants after production starts is the most expensive change a client can request.

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.

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