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Case Study: Glow Plug Supply for a rental company in Europe

Source:Case / Time:2026-09-18

Glow Plug for A rental company in Europe

A rental company came to us with a glow plug programme for 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
  • Reorders that did not match the approved sample
  • Premature wear on the first batch

Glow Plug case study

What was specified

PartGlow Plug
ClientA rental company
MarketEurope
Volume2,000 pieces across 3 specifications
Base materialSintered Metal
Sampling rounds2
Delivery window10 weeks from PO to ex-factory
ComplianceSAE J431

How it was resolved

  1. The specification was rebuilt around Sintered Metal 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.

Glow Plug production run

Result

  • 2,000 pieces delivered inside the 10-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

Keep one accountable owner on both sides. Most delays come from hand-offs, not from machines.

Planning something similar?

Ask for the current catalogue and the specification sheet for this line.

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