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Steering Suspension System Specification Example for Fleet Maintenance: OEM Replacement

Source:Automotive Piston Pin / Time:2026-09-18

Steering Suspension System Specification Example for Fleet Maintenance: OEM Replacement

This is a worked specification for steering suspension system in a oem replacement programme. It is the document we would send a buyer who asks what exactly they are getting: the material, the dimensions that are actually controlled, the finish, and the checks that happen before anything is packed.

The oem replacement version exists because the duty cycle on fleet maintenance is not the same as on a showroom vehicle. Where the two are specified identically, something fails later — usually packing that arrived crushed at the port.

Steering Suspension System

Example specification

ItemSteering Suspension System
ApplicationFleet Maintenance
VersionOEM Replacement
Base materialSilicone
Controlled dimensions3 key dimensions, recorded per lot
Tolerance band±0.2 mm
Finishanodised
MOQ1,000 pieces per specification
Sampling14 working days, 5 days per revision
ComplianceSAE J431

How the example is built up

  1. Start from the duty cycle, not from the catalogue photograph.
  2. Fix the base material in writing — Silicone, in this example.
  3. List the dimensions that are actually controlled and the tolerance on each.
  4. Name the finish and what it has to survive.
  5. State the inspection level and who pays when a lot fails.

Steering Suspension System example

Processes involved

  • surface grinding
  • injection moulding
  • assembly line testing
  • ultrasonic cleaning
  • precision stamping
  • robot welding

Where this example applies

Programmes that run oem replacement most often specify this build for fleet maintenance. Related applications include workshop replacements, delivery vans, dealership service, aftermarket retail, courier fleets.

Checks before packing

  • Dimensional report against the approved drawing.
  • AQL 1.5 sampling on the finished lot.
  • Finish inspection under agreed lighting.
  • Carton drop test on the first lot of a new packing specification.

Questions buyers ask

Can the specification be held on file?

Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the SAE J431-compliant build instead of a fresh interpretation.

How long does sampling take?

Samples leave the factory in 14 working days, and each revision round adds about 5 days once you have seen the first piece.

What testing is included?

Standard lots ship with dimensional and hardness reports. SAE J431 documentation is issued with the shipment when your market requires it.

What is the minimum order quantity?

The standard MOQ is 1000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.

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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