Welcome to Auto, Motorcycle Parts & Accessories official website!

Case Study: Idler Pulley Supply for a government fleet in Central America

Source:Case / Time:2026-09-18

Idler Pulley for A government fleet in Central America

A government fleet came to us with a idler pulley programme for Central 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

  • Inconsistent hardness between lots
  • Reorders that did not match the approved sample
  • A fitment that looked right on paper and failed on the bench

Idler Pulley case study

What was specified

PartIdler Pulley
ClientA government fleet
MarketCentral America
Volume5,000 pieces across 4 specifications
Base materialBrass
Sampling rounds3
Delivery window6 weeks from PO to ex-factory
ComplianceE-mark

How it was resolved

  1. The specification was rebuilt around Brass 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.

Idler Pulley production run

Result

  • 5,000 pieces delivered inside the 6-week window.
  • Unit cost held within 4.5% of the original quotation.
  • Inspection-related rejection stayed under 1.5%.
  • 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?

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

Online customer service
WeChat contact
Customer service
Scan code to add Wechat (same mobile phone number)
Telephone consultation
Back to top